Four senior White House officials did not show up to testify on Monday, including the top lawyer at the National Security Council. The inquiry began releasing testimony from earlier witnesses.

President Trump is set to pick his fifth head of the troubled Department of Homeland Security. Chad Wolf is currently serving in a lower level job at the agency.

A key witness in the impeachment inquiry is set to leave his top post on the National Security Council. Also, Twitter bans political ads and the latest on PG&E and wildfires in California.

The top Russia official on President Trump's National Security Council, Tim Morrison, is expected to leave his post. He is expected to testify before House committees.

Tim Morrison, a White House official asked to testify Thursday in the impeachment inquiry into President Trump, is expected to leave the National Security Council imminently, three sources told NPR.

As part of the House impeachment inquiry, the top Ukraine expert on the National Security Council is expected to lay out deep concerns he had over how the Trump administration handled Ukraine policy.

"I did not think it was proper to demand that a foreign government investigate a U.S. citizen," Army Lt. Col. Alexander Vindman is expected to tell House committees Tuesday.

Charles Kupperman did not appear Monday on Capitol Hill. House investigators want to press him on key parts of an account that President Trump built a shadow foreign policy team to pressure Ukraine.

The killing of ISIS leader Abu Bakr al-Baghdadi comes as President Trump is under increasing pressure from the House's impeachment inquiry.

President Trump has told some Senate Republicans that he wants immigration hard-liner Ken Cuccinelli in charge of Homeland Security. But sources say he is concerned his party won't back the pick.

President Trump announced he'll lift U.S. sanctions on Turkey now that a cease-fire in northern Syria is in place. That deal has paved the way for the Russian military to enter the region.

Ambassador William Taylor said U.S. aid to Ukraine was contingent on the country undertaking investigations that would help President Trump politically. Here are key parts of his written statement.

The Trump administration is withdrawing hundreds of thousands of dollars in fines against some immigrants in the country illegally who have sought refuge in churches.

White House staffers have told President Trump he can't choose two immigration hard-liners for a top job because of federal vacancy rules, according to two people familiar with the conversations.

The key witness this week in the House impeachment probe is expected to be William Taylor, the acting U.S. ambassador to Ukraine. Taylor is an Army veteran who has also worked in the Middle East.

All the candidates oppose President Trump's recent troop withdrawal. But the two military veterans on the stage revealed a lack of consensus over how the U.S. should move forward in the Middle East.

A disturbing video depicting President Trump shooting and stabbing political opponents and media outlets was played at a conference held by a pro-Trump group at his Miami resort last week.

McAleenan "wants to spend more time with his family and go to the private sector," President Trump tweeted. He is the latest casualty at the massive agency responsible for protecting U.S. borders.

The president has angered many in the GOP with his abrupt decision to move U.S. troops in Syria. The move comes as congressional Republicans are also trying to defend Trump from being impeached.

The diplomat, U.S. Ambassador to the EU Gordon Sondland, had been summoned by three House panels. The move has significant implications, as Democrats could seize upon it as instance of obstruction.