A very liberal Democrat - Rep. Mark Pocan (D-WI) has authored a bill to abolish ICE, the Immigration and Customs Enforcement agency. Republicans mischievously insist a vote on the bill be taken, before the November election. Politico has the story.
The measure is popular with very motivated Democrats and basically no one else. Making Democrat colleagues vote on killing ICE forces them to go on-record in favor or against, either way alienating a part of the support Democrats need for reelection.
Essentially no Republicans (and few independents) favor the idea so all GOP Reps. will vote "no" with no penalty at the ballot box. It's clever tactics, the political equivalent of moneyball.