The way I heard it explained today (on OANN) was the Big Beautiful Bill gave a lot of funding to DHS for ICE and CBP, but it was intended to be used to get new equipment/supplies/training, and a bunch of other stuff. Instead, they are using it to pay people. I think the pundits (and politicians) on the right believed they would be able to stop the dems so they weren't really worried about using that money temporarily.

Problem is - none of those morons (in the ENTIRE US Govt) actually know what "temporarily" means.