Window closes on comprehensive immigration bill, and some Republicans see missed opportunity

A Congress that began with bright hopes for immigration legislation is ending in bitter divisions on the issue. But some Republicans warn that the political imperative for acting is stronger than ever for the GOP.

President Barack Obama's recent executive action to curb deportations for millions here illegally stands as the only federal response on immigration. Many Democrats are convinced Latino voters will reward them for Obama's move in the 2016 presidential and Senate elections, while some Republicans fear they will have a price to pay.

With the expiration of the 113th Congress this month, a comprehensive immigration bill that passed the Senate last year will officially die.