Many Senate Republican remain furious at the Trump administration’s $1.8 billion “anti-weaponization” fund and are refusing to advance a separate bill to fund immigration enforcement until they are satisfied that payouts won’t go to people who assaulted police during the January attack on the US Capitol and other guardrails are put in place.

The Trump administration has signaled to Republican congressional leaders that it plans to drop the $1.8 billion “anti-weaponization” fund, though it was unclear how firm or permanent that plan is, ac...