“It seems to me that the two important things to tackle right now . . . are to protect the dreamers and also to strengthen border security,” Sen. Susan Collins, a moderate Republican from Maine, said on CBS’s “Face the Nation.”

She called Trump’s proposals to reform legal immigration “very important” but also “very complicated.”

Appearing after Collins on the same show, Reps. Will Hurd (R-Tx.) and Pete Aguilar (D-Calif.) — who have proposed a House bill to provide legal status to dreamers and bolster border security — agreed that addressing the legal immigration system in the negotiations over dreamers is implausible.