President Trump is not happy with how Homeland Security Secretary Kirstjen Nielsen is running the agency, and the White House is coming up with a list of possible replacements, two people with knowledge of the matter told Quartz.

Sen. Tom Cotton (R-Ark.), Energy Secretary Rick Perry, and retiring Acting Director of Immigration and Customs Enforcement Thomas Homan have all been mentioned as possibilities, Quartz reports.

Congress has declined to give Trump the funding to build the wall along the southern border that he promised supporters he'd deliver once in office, and he blames Nielsen for it. The New York Times reported last week that after he berated her in a meeting, she drafted a resignation letter but never sent it. Nielsen told lawmakers during a hearing this week that she never "threatened to resign," and today, Trump said Nielsen was doing "a good job, and it's not an easy job." Catherine Garcia

Early party primary debates are all about shaking out the differences between the candidates. Perhaps no question did that more starkly on Wednesday night than an inquiry about the biggest geopolitical threat to America. Democrats couldn't agree on an answer, with the 10 candidates giving replies all across the board — and globe.

Former Maryland Rep. John Delaney, Minnesota Sen. Amy Klobuchar, Ohio Rep. Tim Ryan, and Julián Castro all gave "China" as all or part of their answers. Former Texas Rep. Beto O'Rourke and Massachusetts Sen. Elizabeth Warren both answered "climate change," which was also given a nod by Castro and New Jersey Sen. Cory Booker. Nuclear weapons were mentioned by Delaney, Booker, and Hawaii Rep. Tulsi Gabbard. New York City Mayor Bill de Blasio named Russia. Klobuchar also named Iran as one of her concerns.

But perhaps the biggest applause of all went to Washington Gov. Jay Inslee for his answer:

Watch the full range of answers below. Jeva Lange

Julián Castro is having a moment.

During Wednesday's 2020 Democratic debates, the former Housing and Urban Development secretary got an early applause line in when he was asked about closing the gender pay gap. Castro responded by saying he'd pass the long-stalled Equal Rights Amendment — and quickly shot up 2,400 percent in Google search interest since the debates began, Google Trends reported. The Equal Rights Amendment, meanwhile, saw search interest spike 800 percent.

Castro's Google triumph should come with a grain of salt, seeing as he wasn't getting a ton of searches to begin with. In the week leading up to the debates, he wasn't even among the top half of Wednesday candidates in terms of Google searches. Castro was the top searched candidate in barely a handful of counties around the U.S. as well, Google Trends showed.

Of course, no candidate stacks up to pizza. Kathryn Krawczyk

Let chaos reign.

With 10 candidates trying to answer detailed questions in a limited amount of time, Wednesday's Democratic debate in Miami was bound to have a few hiccups. Things got even more complicated when NBC had to cut to break unexpectedly just as the event's second hour was about to get rolling because of microphone and audio issues.

While the technical difficulties might seem like a metaphor for the overcrowded Democratic race, its not without precedent. In 1976, President Gerald Ford and his Democratic challenger Jimmy Carer had to stop their general election debate when the sound cut out. That pause lasted a lot longer than this one, too.

President Trump, at least, was stirred from his boredom by the mishap. Tim O'Donnell

Hablas español? Former Texas Rep. Beto O'Rourke and New Jersey Sen. Cory Booker do, and they put it to full use on Wednesday night, with O'Rourke even receiving a question from Telemundo anchor and debate moderator José Diaz-Balart in Spanish.

At least a few of Thursday night's crop of Democrats were watching and taking note — and, presumably, hastily downloading Duolingo.

One Thursday candidate likely wasn't sweating it, though: South Bend, Indiana, Mayor Pete Buttigieg, who speaks Spanish in addition to Norwegian, French, Italian, Maltese, Arabic, and Dari. Jeva Lange

President Trump is not entertained.

As 2020 Democrats debated on Wednesday night, Trump, who had previously promised to live-tweet the debates, stayed uncharacteristically silent. That's apparently because, as he tweeted 35 minutes into the debates, it was "BORING!"

Trump's one-word tweet came as Democrats onstage discussed the stunning photo of a migrant father and daughter who died while crossing the Rio Grande. Beto O'Rourke, who broke into Spanish during the discussion, tweeted earlier that Trump is "responsible" for their deaths. The photo came as a visceral reminder of the ongoing humanitarian crisis at the U.S.-Mexico border. Kathryn Krawczyk

Sen. Elizabeth Warren (D-Mass.) made her stance on health care policy very clear during Wednesday's Democratic primary debate.

When the 10 candidates on stage in Miami were asked whether they would abolish private, for-profit health insurance for a government-run plan, only two raised their hands: Warren and New York City Mayor Bill de Blasio.

After Sen. Amy Klobuchar (D-Minn.) gave a brief defense for an incremental approach and retaining a public option, Warren expressed her support for a government-run plan. The senator, who has been surging in recent weeks, said health care is a human right and declared that she stands with her old friend Sen. Bernie Sanders (I-Vt.) in support of Medicare-for-All. Sanders' supporters in the past have questioned Warren's commitment to the idea. Tim O'Donnell