Tom Williams/CQ-Roll Call via Getty Images
- 20 GOP senators are already opposed to a new bipartisan border security proposal.
- It's been less than 24 hours since its release, and the House GOP says it won't even get a vote.
- Republicans, including Trump, argue the bill isn't harsh enough.
Nearly half of the Senate Republicans have announced that they will oppose a bipartisan agreement to toughen US immigration laws and enact new border security measures.