Robert Mercer, co-CEO of Renaissance Technologies and a major conservative donor, had brought attention to his firm. He is resigning amid reports that other company executives chafed at the scrutiny.
The president has completed a full purge of top White House aides instrumental to his election. Their ouster could be a big gamble, as Trump finds himself with fewer and fewer allies.
Steve Bannon called a liberal journalist to talk China, white nationalism and his "fight" with others in the administration. "They're wetting themselves," he says of his State Department rivals.
There has been a huge debate about immigrants who are in the U.S. illegally, but the administration is looking to cut the number of legal immigrants allowed into the country by half.
The Internet is mocking "The Mooch's" tenure in the Trump White House by noting things that lasted longer. But he did get a few things done that might have a lasting impact.
Author Joshua Green says that although Steve Bannon was instrumental to Donald Trump's election, it now appears that the president lacks the ability to implement Bannon's nationalist vision.
The president gave the clearest indication yet that his chief strategist could be on his way out, saying, "I like Steve, but you have to remember, he was not involved in my campaign until very late."
There is backbiting and infighting in the Trump White House that's playing out like a season of House of Cards or Veep. But the president is facing real and difficult challenges at home and abroad.
Bannon had been elevated to the national security group in an unprecedented move in January. He will retain his role as senior adviser for domestic affairs.