The four progressive Democratic lawmakers targeted by President Trump in a series of racist tweets over the weekend held nothing back during a press conference on Monday.

"We can continue to enable this president and report on the bile of garbage that comes out of his mouth, or we can hold him accountable for his crimes," Rep. Ilhan Omar (D-Minn.) said. "It is time for us to stop allowing this president to make a mockery out of our constitution. It is time to impeach this president."

On Sunday, Trump referenced Rep. Ayanna Pressley (D-Mass.), Rep. Alexandria Ocasio-Cortez (D-N.Y.), Rep. Rashida Tlaib (D-Mich.), and Omar in several tweets, saying they "originally came from countries whose governments are a complete and total catastrophe" and the women needed to "go back and help fix the totally broken and crime infested places from which they came." Ocasio-Cortez, Tlaib, and Pressley were all born in the U.S.; Omar's family fled Somalia more than 20 years ago, and she is now a naturalized U.S. citizen.

Pressley said Trump's remarks — which he refused to apologize for on Monday — are "simply a disruption and a distraction from the callous, chaotic, and corrupt culture of this administration. I encourage the American people and all of us in this room and beyond not to take the bait." As for Ocasio-Cortez, she believes Trump "does not know how to defend his policies and so what he does is attack us personally." Catherine Garcia

In Belarus, protesters took to the streets of Minsk on Sunday night after a government exit poll predicted the authoritarian President Alexander Lukashenko will win a sixth term, with 80 percent of the vote.

Witnesses said riot police fired stun grenades, rubber bullets, and water cannons at the demonstrators in order to break up the crowd, BBC News reports. Lukashenko, 65, has been in power since 1994, and is often referred to as "Europe's last dictator." Leading up to the election, the government cracked down on journalists and activists, and officials blocked two challengers from appearing on the ballot and arrested another.

Opposition leaders said they expected the vote to be rigged, and observers were not allowed to monitor the election. The exit poll gives Lukashenko's primary challenger, former teacher Svetlana Tikhanovskaya, seven percent of the vote, but she said during a press conference that she believes "my eyes, and I see that the majority is with us." Catherine Garcia

President Trump just signed a series of coronavirus pandemic-related executive orders in an attempt to bypass a congressional stalemate over an economic relief bill. Naturally, the people who were at the negotiating table the last few weeks had some thoughts.

House Speaker Nancy Pelosi (D-Calif.) and Senate Minority Leader Chuck Schumer (D-N.Y.) on Sunday echoed critics who have called the president's orders unconstitutional and weak. Pelosi told Fox News' Chris Wallace the orders are "illusions," with Schumer adding during an appearance on ABC's This Week that they don't "do the job."

Meanwhile, Treasury Secretary Steven Mnuchin, who sat on the other side of the table, defended the actions, arguing that Pelosi and Schumer had a chance to accept the White House's offer of continuing to pay $600/week enhanced unemployment benefits — which would be reduced to $400/week under Trump's order — during negotiations, but "turned that down." Mnuchin said Democratic lawmakers will have "a lot of explaining to do" if they challenge the executive actions in court, which seems likely at this point. Read more at The Hill. Tim O'Donnell

Face the Nation host Margaret Brennan repeatedly pushed National Security Adviser Robert O'Brien on Sunday to say whether President Trump has told Russian President Vladimir Putin "to knock it off" when it comes to U.S. election interference. O'Brien said he doesn't get involved with his boss' conversations with other world leaders, but said the Trump administration remains committed to keeping Moscow out of the picture.

Trump, O'Brien said, has been tougher than his predecessors. So much so, he argues, that there's little else Washington can do since they've already "sanctioned the heck out of" individuals, companies, and the government in Russia, kicked Russian spies out of the U.S., and closed down consulates and other diplomatic facilities. "Nevertheless we continue to message the Russians, and President Trump continues to message the Russians: don't get involved our elections," O'Brien said, adding that the warning extends to Beijing and Tehran, as well.

Brennan, however, pointed out throughout the interview that intelligence reports indicate that the messaging — and the sanctions — don't seem to have gotten through to the Kremlin, as there's still evidence Russia is working to undermine the electoral process stateside. Foreign policy experts have also suggested current sanction policy doesn't always prove to be a deterrent, since Moscow views them as permanent and therefore has little incentive to change its behavior purely based on those actions. Tim O'Donnell

The coronavirus is a serious, often-deadly pathogen, yet the Centers for Disease Control and Prevention estimates 40 percent of all cases are asymptomatic. In some isolated outbreaks in prisons and food processing plants where thousands of people contracted COVID-19, as many as 94 percent of infected individuals presented no symptoms. The Washington Post spoke to experts and suggested four possible reasons as to why, though it's important to note the research in all cases is in early stages.

T-Cells: T-cells, a type of white blood cell that generally provides longer-lasting immunity than antibodies, may be the key to understanding resistance. One research group found that, among uninfected blood samples donated to a blood bank between 2015 and 2018, a "remarkable" 40 to 60 percent recognized the coronavirus, suggesting some people may have an immune response based on memory of other, less potent coronaviruses.

Vaccines: The Mayo Clinic is studying whether vaccines for other pathogens can protect against the virus, as has been proven in other situations. Seven types of vaccines given one, two, or five years in the past were found to be associated with a lower rate of coronavirus infection, particularly pneumonia and polio vaccines.

Allergies: Scientists have noted children with asthma and allergies surprisingly don't seem to be at high risk of developing serious cases of COVID-19. One theory is that those children have a reduced number of ACE2 receptors, the protein the virus latches onto before replicating inside the body. Without those receptors, the virus' chance of causing damage could decrease, meaning allergies may offer protection in this case.

Masks: Masks are discussed as a preventative measure, but they may contribute to more mild infections, as well. The most direct evidence of this theory is a comparison of two cruise ships. On the Diamond Princess, where masks weren't used, 47 percent of the positive cases were asymptomatic, whereas an Antarctic-bound Argentine cruise ship that had a similar outbreak, but provided masks to all passengers and crew, saw an 81 percent asymptomatic rate. Read more at The Washington Post. Tim O'Donnell

One of the coronavirus pandemic-related executive orders signed by President Trump addressed evictions, but critics say it's a weak move that doesn't actually extend a moratorium. Instead, the order merely directs the Treasury Department and the Department of Housing and Urban Development to consider taking action, Josh Blackman writes for Reason.

In short, the order instructs the two departments to look into identifying federal funds that could potentially provide assistance to renters and homeowners who can't meet their monthly rental and mortgage payments because of the pandemic. There are no guarantees.

Similarly, observers believe the payroll tax deferral order was overplayed, since taxpayers will still ultimately owe the money next year.

Trump has said he'd try to terminate the tax altogether if he's re-elected, but it's unclear if he has the authority do so, and he would likely face bipartisan opposition in Congress. Tim O'Donnell

It's not hard to read between the lines of Health and Human Services Secretary Alex Azar's visit to Taiwan to meet with health officials about the coronavirus pandemic.

Azar arrived Sunday, making him the highest-ranking U.S. cabinet official to embark on a diplomatic visit to the island since 1979 when Washington broke relations with Taipei as a concession to China, which claims Taiwan as a territory. Since then, the U.S. has remained a de facto ally of Taiwan, but has largely refrained from demonstrating any semblance of official ties. The Trump administration has increasingly played fast and loose with those guidelines of late, however, as the U.S.' relationship with China deteriorates, especially in light of the pandemic. And it certainly feels like Azar's trip is part of the possible "strategic shift," The Financial Times reports.

While some experts acknowledge Taiwan deserves better treatment from the U.S., there's also a sense that Washington is creating risks for Taipei, FT reports. "We ought to push the envelope because the envelope was sealed by us, and we have opened it before," said William Stanton, a former director of the American Institute in Taiwan. "But there is the worry — and it is one Taiwan needs to consider as well — that the China threat is constantly there."

Additionally, Shelley Rigger, a professor at Davidson College and a leading Taiwan expert, told FT she isn't sure how serious President Trump is about supporting Taiwan and predicted he could back down if things with China really get heated, leaving the island vulnerable. "If I were Beijing, I would be asking myself: 'If the U.S. gives us a justification to attack Taiwan, what are the odds that he will change is pattern of cutting and running?" Rigger said. Read more at The Financial Times. Tim O'Donnell