“The primary worry they’re going to have is 2021, if the election goes against President Trump,” Lacovara said. “If Trump is reelected, then I think they’ll be pretty well insulated by a pliant DOJ.”

Here’s a look at some of the key players surrounding the president who will be among the first to face a punishing spotlight as the impeachment inquiry ensnares Trumpworld.

Mike Pence

Few are more important in Trump’s orbit on foreign policy than the vice president. Pence is Trump’s right-hand man when dealing with fellow world leaders. He’s often piped in for phone calls. And the two strategize about it all at their weekly lunches.

It’s with that pedigree that the president dispatched Pence earlier this month to cover for him in Poland on a trip that included a meeting with Ukrainian President Volodymyr Zelensky. Asked by a reporter whether they’d discussed Joe Biden, Pence said the conversation covered U.S. financial support for the Eastern European country and “corruption.”

Trump is hardly helping the matter. During a Wednesday news conference in which the threat of impeachment loomed, the president pretty much tossed his No. 2 to the wolves. “I think you should ask for Vice President Pence's conversations, because he had a couple conversations also,” Trump said. “I could save you a lot of time. They were all perfect. Nothing was mentioned of any import other than congratulations.“

William Barr

The attorney general has seen his reputation savaged since joining the Trump administration at the start of 2019. He ran afoul of his longtime friend Robert Mueller over how he handled the end of the special counsel’s Russia probe. In July, his defiance alongside Commerce Secretary Wilbur Ross of congressional subpoenas prompted a House vote to hold them in criminal contempt — the second time in U.S. history that’s happened to a sitting Cabinet member.

Now there’s the Ukraine mess.

Barr joined the story on Wednesday when the White House released notes from a July phone call between Trump and Zelensky in which the president twice named the attorney general as someone who should be part of the country’s effort to investigate the Bidens. A Justice Department spokeswoman said Trump never directly asked Barr to begin a Biden probe, though that hardly quelled the concerns from Democrats. House Judiciary Chairman Jerry Nadler said Barr needs to recuse himself from the issue. Rep. Joaquin Castro, a Texas Democrat on the Intelligence Committee, called the attorney general a “witness that will be called to testify” in the impeachment investigation.

INTERACTIVE: See where House lawmakers stand on impeachment

Mike Pompeo

The secretary of State has been one of the Cabinet secretaries Trump trusts the most. Amid constant chatter about whether Pompeo will pursue a U.S. Senate seat from Kansas, the president seems to side with his top diplomat on major foreign policy matters involving Iran, Venezuela and numerous other hot spots. And Pompeo has been careful to always eliminate any perception of daylight with the president.

Some of his larger trouble could come via the Trump personal lawyer Rudy Giuliani, who says he was tasked by the State Department to engage with Ukrainian officials. It’s unclear what role Pompeo played in it all, though he has been a willing defender of the president on television. House Democrats are likely to seek clarity about his involvement in the coming months.

Mick Mulvaney

The president’s acting chief of staff has spared himself from the ever-present Trump ax in part by letting Trump be Trump. That could become a problem now.

His role in the West Wing puts him at the center of every major Trump engagement, including with foreign leaders. His continuing role as the president’s budget director puts him at the center of every major spending decision, including the holdup of hundreds of millions of dollars in military aid to Ukraine.

Mulvaney maintains relationships with Republicans on Capitol Hill from his time as a House lawmaker. Now, Democrats will be keen to learn his role in empowering Trump and others in the decision to withhold Ukraine aid.

Rudy Giuliani

Where to even begin? The former New York mayor has relished his role on the Trump personal legal team, where he has served as an attack dog tarring the president’s investigators and a point man to go on friendly cable TV shows to spin bad news in the best light possible. With the Ukraine-Biden matter, Giuliani has celebrated how he’s managed to get global media attention on a story that he hopes will undercut the front-runner for the 2020 Democratic presidential nomination.

But Giuliani has also made himself a potential witness, or more, over his monthslong campaign — both behind the scenes and very much in the public eye — to get Ukrainian officials to commit to a Biden investigation. Trump in the phone call with Zelensky made it clear his lawyer was acting as his emissary on the issue.

Three Democratic-led House panels have already launched a probe into Giuliani’s outreach. And on the other end of the Capitol, seven Democratic senators on Wednesday re-upped their calls — they first did it a year ago — to have the Justice Department’s National Security Division investigate whether Giuliani is in compliance with foreign lobbying laws.

