Additional context:

TSA is part of DHS (Department of Homeland Security). ICE and border patrol are also a part of DHS.

After ICE started shooting citizens, the democrats said “no additional funding without some reforms.” In trumps Big Beautiful Bill ICE was already given a huge chunk of funding for the next few years, but they would like more.

Democrats have been trying to fund TSA but want a separate vote for ICE. This arrangement recently passed the senate but republicans in the house voted it down because they think they can pin the blame on the democrats and force them to give ICE more funding along with the TSA.