A moderate Republican senator is seeking support from both parties for a compromise to block guns from suspected terrorists.

Maine Sen. Susan Collins was discussing her plan with GOP leaders on Tuesday. On Monday, the Senate split along party lines and rejected rival plans from each side aimed at preventing known and suspected extremists from getting guns.

There are about 1 million people on the government's overall terrorist watch list. Collins' proposal would apply to far fewer people.

It would let federal prosecutors bar guns for the 81,000 people on the federal no-fly list, and the 28,000 people on the government's selectee list.

Those are people who can board planes after extra screening.

It remained uncertain Tuesday whether leaders would allow a vote on Collins' plan, and whether it could pass.