Lawmakers on Capitol Hill have begun to seriously entertain Donald Trump’s impeachment amid the seemingly daily onslaught of devastating revelations for the White House, and with it, the prospect of President Mike Pence. But while Republicans view the vice president as a stabilizing, reliably conservative force within the chaos-ridden administration, Democrats see a man tarnished by the same scandals that could bring down his boss. And despite his valiant effort to avoid the turmoil Trump seems to relish, the vice president has a credibility problem that could tank his political aspirations—presidential or otherwise.

During an interview with CBS’s Face the Nation five days before Trump’s inauguration, Pence flatly denied that Mike Flynn discussed the election-related sanctions with Russian Ambassador Sergey Kislyak. “What I can confirm, having spoken to him about it, is that those conversations that happened to occur around the time that the United States took action to expel diplomats had nothing whatsoever to do with those sanctions,” Pence said. But weeks later, The Washington Post reported that, according to former and current United States officials, the former national-security adviser had broached the topic with Kislyak—a revelation that ultimately led to Flynn’s resignation in February. The episode raised the question: did Flynn mislead Pence or did Pence mislead the public?

Ultimately, the White House threw its weight behind the former, saying Trump asked for Flynn’s resignation, not because he had discussed the sanctions, but because he deceived the vice president. But on two separate instances in the months since the Flynn-Kislyak imbroglio, Pence has feigned a similar ignorance when he has spun the White House talking points, only to be disproven later.

Last week, Pence defended Trump’s decision to fire James Comey by asserting that the president acted on the recommendation of Deputy Attorney General Rod Rosenstein, who argued that the former F.B.I. director had mishandled the Justice Department investigation into Hillary Clinton’s use of a private e-mail server at the State Department. That explanation was almost immediately undermined by the president, himself, who declared during an interview with Lester Holt that, as many suspected, he was going to fire Comey “regardless of [Rosenstein’s] recommendation,” and that “this Russia thing” was front of mind when he ordered his dismissal.

Other revelations this week similarly have raised additional questions about the extent of Pence’s entanglements. In early March, news broke that Flynn had retroactively registered as a foreign agent for $600,000 worth of lobbying work on behalf of the Turkish government. When asked about the reports during an interview with Fox News’s Bret Baier on March 9, Pence said twice that it was “the first I’d heard of it.” But this week, news broke that Flynn not only allegedly informed Trump’s legal team before the inauguration that he might have to register as a foreign agent, but that he also reportedly told White House counsel Don McGahn that he was under investigation for his lobbying work. On Wednesday, McClatchy reported that Flynn had pushed the Obama administration to delay a military attack on ISIS that would have involved a partnership with Syrian Kurdish forces—a recommendation that makes little sense except that it was in line with the wishes of Flynn’s Turkish patrons. In light of these revelations, Pence’s proclaimed lack of knowledge about Flynn’s lobbying efforts has incited fresh scrutiny. At the time, the vice president was leading the White House transition team effort.