Mara Liasson

He doesn't cut the profile of a member of "The Resistance," but Bolton's opposition to a pressure campaign to get Ukraine to investigate conspiracy theories may pit him against his former boss.

The Department of Justice is opening a criminal investigation into the origins of the Russia investigation. Also, a look at Republican response to the impeachment inquiry and protests in Iraq.

John Bolton's role in the events that sparked the House's impeachment inquiry is coming to light. It could change his political legacy.

An update on President Trump's G-7 announcement, the Ukraine scandal and the impeachment inquiry.

Vice President Pence is meeting with Turkey's President Erdogan in Ankara, trying to convince him to stop the assault on the Kurds in Syria. Also, a look at the history of Gordon Sondland.

Vice President Pence and Secretary of State Pompeo are traveling to Turkey as President Trump continues to face criticism at home over his Syria policy.

Twelve Democratic presidential contenders took to the debate stage in Westerville, Ohio, Tuesday night. The issue of impeachment was at the top of the agenda.

Twelve Democratic candidates debate Tuesday in Ohio, as the race has been shaken by impeachment, Bernie Sanders' heart attack and Elizabeth Warren's challenge to longtime front-runner Joe Biden.

Twelve presidential candidates are set to debate in Westerville, Ohio, Tuesday night. It will be the largest crowd on a debate stage yet, and the first since the House launched an impeachment inquiry.

The White House has intensified its fight against House Democrats' impeachment inquiry — saying the administration will not provide any documents or testimony.

The White House sent a letter to House Democrats saying their impeachment probe "lacks any legitimate constitutional foundation" setting up a standoff between Congress and the Trump administration.

President Trump is facing major pushback within the GOP over his decision to pull U.S. forces back in northern Syria. He's facing muted criticism for asking Ukraine and China to investigate Joe Biden.

Subpoenas are issued to the White House, the State Department misses its subpoena deadline, plus what GOP lawmakers are saying — or not — about the impeachment inquiry.

House Intelligence Committee member Rep. Mike Quigley, a Democrat, explains what the panel expects to gain from closed-door hearings Thursday with former Ukraine envoy Kurt Volker.

The coming week will likely bring a messaging war, as well as a battle between Congress and the Trump administration over the levers of oversight power.

What are the political stakes for President Trump and Democrats as the House accelerates its impeachment inquiry into the president?

President Trump's conversations with world leaders are echoing through Congress and the campaign trail.

President Trump spoke to Democratic leaders in Congress over the weekend about gun control, but the two sides have not yet found agreement.

What does the president want in a national security adviser, now that the job is open again? Plus, Senate races that are in play in 2020.

Ten Democratic presidential candidates will take the debate stage Thursday night. It's the first time they will all be on the stage at the same time. We assess the risks and rewards.