Democrats should n't rush the legislative process `` given the events of this week , '' NEW : Sens . John McCain and Lindsey Graham say Boston bombing prove need for immigration reform . Sen. Chuck Grassley says Boston bombings raise new immigration reform concerns . Comment: Bipartisan immigration bill aims to tighten border security , create path to citizenship .
NEW : Sens . John McCain and Lindsey Graham say Boston bombing prove need for immigration reform . Sen. Chuck Grassley says Boston bombings raise new immigration reform concerns . Comment: Bipartisan immigration bill aims to tighten border security , create path to citizenship .