In response to the president's announcement, Senator Marco Rubio did concede in a statement that President Obama's immigration order is "welcome news for many of these kids desperatly waiting for an answer".

Worth noting about Rubio and his Dream Act alternative; He's yet to write draft on any legislation on the subject. This could cause problems between him and Mitt Romney, as Romney has vowed to repeal any Dream Act that gets passed by congress.

Rubio Has Yet to Provide His Alternative to Dream Act | TheLedger.com