For nearly a year, Senate Republicans have left President Barack Obama’s latest Supreme Court nominee Merrick Garland twisting in the wind. Now, a number of Mitch McConnell’s enemies from across the aisle are poised to return the favor. Lacking a majority, Senate Democrats can’t outright block any of Donald Trump’s cabinet picks—at least not without Republican support— but they can make the Senate confirmation process protracted and painful. A number of Democratic senators are reportedly prepared to submit a handful of the president-elect’s most controversial cabinet picks to fraught hearings, which could hamstring Trump’s first 100 days in office and slow G.O.P. efforts to unravel Obama’s legacy.

“They’ve been rewarded for stealing a Supreme Court justice. We’re going to help them confirm their nominees, many of whom are disqualified?” Sherrod Brown, a Democratic senator from Ohio, told Politico. “It’s not obstruction, it’s not partisan, it’s just a duty to find out what they’d do in these jobs.” Dianne Feinstein echoed calls for political payback. “Past is present, and what goes around comes around. Now, those are pretty hackneyed sayings, but those are really true around here,” the California senator said.

While Trump has yet to fill more than half of his cabinet, a number of early appointments have sparked intense scrutiny, and in some cases, vocal opposition. The most notable among these is Alabama Senator Jeff Sessions, whom Trump named attorney general, but was previously denied a federal judgeship under President Ronald Reagan over allegations of racist remarks while serving as a U.S. attorney. Trump’s picks for Treasury secretary, secretary of Education and Health and Human Services secretary—“foreclosure king” Steve Mnuchin, Amway heiress Betsy DeVos, and Georgia Senator Tom Price, respectively—are also expected to undergo thorough, lengthy confirmations. Democratic senators are also sure to look closely at Trump’s pick to lead Housing and Urban Development, Ben Carson, who has no relevant experience to run a $47 billion government agency.

To bar a nomination, Democrats need 51 votes, leaving them three short. They can, however, use delay tactics to prolong the confirmation process by forcing procedural votes and hours of debate, which could swallow weeks of precious G.O.P. time. “I don’t want to needlessly prevent President Trump from being successful,” Chris Coons, a Democratic senator from Delaware, told Politico. “But accelerating the confirmation of unacceptable candidates who have views that are outside the mainstream is not constructive.”

This rumored strategy has already drawn the ire of McConnell, who led the Senate’s controversial decision to stonewall Garland. “It is always the intention, at the start of a new administration, to have a smooth transition. That’s something President Obama recently called for and that Democrats always say they want,”Don Stewart, a spokesman for the Senate majority leader, told Politico. “When the shoe was on the other foot, Republicans worked with Democrats to confirm the president’s cabinet in a very, very timely manner.” But not all Democrats are prepared to take a page from McConnell’s book.

“I’ve heard no conversations about the kind of obstruction that Mitch McConnell specialized in,” Missouri Senator Claire McCaskill said. “But there may be some where there are real questions about their qualifications and some of the things in their backgrounds.” West Virginia Democratic Senator Joe Manchin, who is reportedly being considered for Trump’s secretary of state, characterized the rumored delay strategy as “bullshit.” And Chris Murphy of Connecticut said he thinks certain cabinet positions should be prioritized in the confirmation process. “I’m not going to vote for radical nominees, and I’m not going to vote for totally unprepared nominees,” Murphy told Politico. “But if a nominee is more to the mainstream of the Republican Party and has experience in the field they’re undertaking to oversee, there will be Democratic votes.”