HBO on Tuesday will premiere "The Swamp," a new documentary film offering "a look behind the curtain of Washington politics," including in-depth interviews with three GOP congressmen, the premium network said in Wednesday release.

Among other topics, the documentary tackles what it means to "drain the swamp," a favorite phrase of President TrumpDonald TrumpBiden administration still seizing land near border despite plans to stop building wall: report Illinois House passes bill that would mandate Asian-American history lessons in schools Overnight Defense: Administration says 'low to moderate confidence' Russia behind Afghanistan troop bounties | 'Low to medium risk' of Russia invading Ukraine in next few weeks | Intelligence leaders face sharp questions during House worldwide threats he MORE's, for Republican Reps. Matt GaetzMatthew (Matt) GaetzOfficer wounded in raid that killed Breonna Taylor gets book deal McCarthy says Gaetz won't be punished unless charges filed Matt Gaetz makes six-figure ad buy targeting CNN amid sex trafficking allegations MORE (Fla.), Thomas MassieThomas Harold Massie14 Republicans vote against resolution condemning Myanmar military coup House approves bills tightening background checks on guns Can members of Congress carry firearms on the Capitol complex? MORE (Ky.), and Ken BuckKenneth (Ken) Robert BuckHillicon Valley: Biden administration sanctions Russia for SolarWinds hack, election interference Republican lawmakers reintroduce bill to ban TikTok on federal devices Hillicon Valley: Supreme Court rules Facebook text alerts not akin to robocalls | Republicans press Google, Apple, Amazon on Parler removals | Texas Senate blocks social media platforms from banning users based on politics MORE (Colo.).

"If people are going to drain the swamp like the president wants to do, they need better information ... about how this place is broken," Massie says in the documentary. "And that's my mission in Congress."


"'The Swamp' highlights how the prevalence of lobbyists and special interest groups in Washington can influence policy based on financial contributions ... how Congressmembers' ability to get key committee assignments depends on how much money they are able to bring in," a press release on the film said.

Directors Daniel DiMauro and Morgan Pehme, the minds behind the 2017 documentary "Get Me Roger StoneRoger Jason StoneTwo alleged Oath Keepers from Roger Stone security detail added to conspiracy indictment Authorities arrest Oath Keeper leader seen with Roger Stone Political land mines await Garland at DOJ MORE," interview Gaetz, Massie, Buck and others as they deliberate policy and achieving success "through bi-partisan government cooperation and reform of the status quo."

"I didn't run as someone to unify Washington, I ran to change Washington," Gaetz says in the film, which is slated to debut on HBO Tuesday at 9 p.m.

—Updated Thursday at 3:29 p.m.