Alex Conant [Email him] is Senator Marco Rubio's press secretary:
Americans will reject any attempt to tie terrorists responsible for Boston w/ law-abiding immigrants currently in US & those hoping to come— Alex Conant (@AlexConant) April 19, 2013
Expect a lot more of this.
After 9/11 the Left's first reaction was to form a Society For The Protection Of Enemy Aliens. Bush's first reaction was to go to a mosque and say "Islam is a religion of peace."