Despite politicians in his own party, like House Speaker Paul Ryan (R-Wis.), calling on him to ditch his plan to impose tariffs on steel and aluminum, President Trump said Monday he's "not backing down."

Last week, Trump surprised everyone by announcing he planned on implementing a 25 percent tax on steel imports and a 10 percent tax on aluminum imports. On Monday, Ryan released a statement saying he was "extremely worried about the consequences" of such a move, and his spokeswoman said there were concerns this would launch a "trade war," with Ryan "urging the White House to not advance with this plan."

A Canadian government official told Reuters that Prime Minister Justin Trudeau called Trump on Monday, letting him know that if he imposed tariffs, it would be a roadblock in ongoing talks on updating NAFTA. Canada is the largest supplier of aluminum and steel to the U.S., and the official said during the call, Trudeau "forcefully defended" his country's workers and industries. Trump was not swayed by Ryan's concern or his conversation with Trudeau; in a meeting at the White House with Israeli Prime Minister Benjamin Netanyahu, Trump said, "We're not backing down. I don't think you're going to have a trade war." Catherine Garcia

President Trump continued his trend of commenting on current affairs on Twitter this weekend as protests against police brutality take place across the country, but he's mostly stayed out of the physical spotlight. The White House on Sunday declared a lid, which means no one should expect to see or hear from the president for the rest of the day, and ABC News reports there's a growing divide within the Trump administration about how Trump should respond to the situation.

Some of his advisers, reportedly including his son-in-law Jared Kushner, don't think there's any political benefit to Trump addressing the nation from the Oval Office since the few times he's done so haven't turned out so great. But others, like White House Chief of Staff Mark Meadows, believe it's a chance for Trump to show that he's a strong leader and a unifier in a fashion similar to former President George H.W. Bush during the 1992 Rodney King riots in Los Angeles.

One person who doesn't want to hear the president speak is Atlanta Mayor Keisha Lance Bottoms. Bottoms said Sunday she hopes Trump remains quiet, arguing he'd likely only make a difficult time even worse. Tim O'Donnell

National Security Adviser Robert O'Brien still believes it's just "a few bad apples" within U.S. law enforcement agencies that have caused problems leading up to the current nationwide unrest, like the police officer who put his knee on George Floyd's neck earlier this week before Floyd died in custody.

CNN's Jake Tapper asked O'Brien on Sunay if he believed systemic racism was at the heart of issues plaguing American law enforcement. O'Brien said he doesn't believe that's the case, arguing that 99.9 percent of officers are "great Americans" and his "heroes." The officers who don't fall into that category, he said, "need to be rooted out."

O'Brien isn't alone in feeling this way — Sen. Ted Cruz (R-Texas) recently made a similar argument. But, ABC News's Pierre Thomas, who is black, offered a different opinion Sunday. While he did agree with O'Brien that the majority of the nation's police officers are good people who work very trying jobs, he said the issue isn't only centered around police brutality. Rather, what's driving the protests are the "indignities black men and women and people of color face all the time," explaining that, among other things, he's been pulled over simply for driving a nice car multiple times. "I think we're at a point where people are saying 'we're sick and tired of being sick and tired,'" he said. Tim O'Donnell

Protests against police brutality following the death of George Floyd have drawn large gatherings in dozens of major cities across the United States and even in places like London and Berlin. The development has many — including those who have voiced their support for the movement — fearing that a new spike in coronavirus cases could be just around the coroner, The Associated Press reports.

Many demonstrators are wearing masks, but the crowd sizes make social distancing challenging, and public experts have also pointed out that the virus is spread by droplets released when people cough, sneeze, sing, or talk. Chanting, of course, is a common practice at protests. That's not mention the fact that the virus appears to spread even among asymptomatic carriers.

Atlanta Mayor Keisha Lance Bottoms said people who attended the protests this weekend "probably need to go get a COVID test this week," while also warning that the pandemic "that's killing black and brown people at higher numbers" won't pause for the protests. Read more at The Associated Press. Tim O'Donnell

SpaceX's Crew Dragon, carrying American astronauts Bob Behnke and Doug Hurley, successfully docked with the International Space Station on Sunday after a 19-hour journey from the Kennedy Space Center in Florida.

The mission, run jointly by SpaceX and NASA, was the first crewed space flight launched from U.S. soil since 2011 and the first ever orchestrated by a private company.

The Crew Dragon arrived at the station a few minutes early, and Hurley and Behnken are now conducting a series of pressure and leak checks to ensure their safety before they open the hatch and enter the station. The flight went as planned, and the astronauts said the capsule performed beautifully, per The Associated Press. Watch the docking below and follow along as Behnke and Hurley prepare to enter the station here. Tim O'Donnell

One of the most striking scenes from Saturday's nationwide police brutality protests occurred when New York Police Department vehicles were seen driving into a crowd of protesters, some of whom were holding onto a barricade in front of one the trucks. It's unclear if there were any injuries, CNN reports.

New York City Mayor Bill de Blasio weighed in on the incident, saying that he wished the officers "hadn't done that," but they "were being surrounded by a violent crowd" and "if those protesters had just gotten out of the way," the "troubling" moment never would have happened.

Another New York politician, Rep. Alexandria Ocasio-Cortez (D-N.Y.), was not pleased with the mayor's response, deeming it "unacceptable," especially since the police department ultimately falls under his leadership, (although the police union hasn't always taken too kindly to the mayor, either.) Ocasio-Cortez called for de Blasio to "de-escalate" the situation. Tim O'Donnell

President Trump isn't considered a big fan of multilateral diplomacy, and he's often willing to set a separate course for the United States and operate outside the traditional international system. But, when it comes to the Group of Seven, the U.S. president actually want to expand the talks to include several other countries.

Trump on Saturday postponed the G-7 summit, which he had hoped to host in Washington, D.C., at the end of June, until at least September. Both German Chancellor Angela Merkel and Canadian Prime Minister Justin Trudeau refused to commit to attending over concerns about the coronavirus pandemic, but Trump didn't indicate their potential absences were the primary reasons for his decision.

Instead, Trump said he believes the current group of countries — the U.S., Germany, Canada, Great Britain, France, Japan, and Italy — is "outdated" and doesn't represent "what's going on in the world." He said he plans to extend invitations to Australia, South Korea, India, and Russia. The latter will likely prove the most controversial; Russia was expelled from what was then the Group of Eight in 2014 over Moscow's annexation of Crimea, and other G-7 leaders have continually rejected Trump's efforts to bring Russian President Vladimir Putin back into the fold.

Per Reuters, it seems one of the factors motivating Trump to expand the invite list is so the countries can discuss China, which he's grown increasingly critical of in the wake of the pandemic and its efforts to curtail Hong Kong's autonomy. Read more at CNN and Reuters. Tim O'Donnell