Tamara Keith

Fifteen months into the Trump presidency, the first state dinner, in honor of French President Emmanuel Macron, will be a big moment for first lady Melania Trump, who has kept a lower profile than many of her predecessors.

"It's much more than just a dinner," said Kate Andersen Brower, author of First Women: The Grace and Power of America's Modern First Ladies and a forthcoming book about vice presidents.

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Special counsel Robert Mueller notified President Trump's lawyers last month that the president is being investigated as part of the Russia probe, but a source familiar with the situation says they were told Trump was not a criminal target at that time.

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Breaking news out of the White House tonight. President Trump's national security adviser is stepping down. Trump tweeted that Lieutenant General H.R. McMaster will be replaced by former ambassador to the United Nations John Bolton.

Updated at 4:20 p.m. ET

John Dowd, the veteran attorney leading President Trump's outside legal team, has tendered his resignation, marking a shakeup just as Trump had turned his Twitter ire on special counsel Robert Mueller and his investigation.

Dowd declined to explain why he was leaving the team that is helping the president deal with the Russia investigation. But a source familiar with Dowd's thinking says he was tired and frustrated, in a draining job with not enough resources and with a client who was not taking his advice.

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Updated on March 29 at 4:50 p.m. ET

With his decision to replace VA Secretary David Shulkin, President Trump is once again setting records for turnover. No elected first-term president in the past 100 years has had this much Cabinet turnover this early in his presidency. And since the establishment of the secretary of Veterans Affairs as a Cabinet position in 1989, Shulkin has served the shortest of any secretary, with the exception of those who came on board to serve out the tail end of a president's term.

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