Long time since I looked it up but I believe while speaker he blocked some amnesty related bills from reaching the floor. He makes a perfect GOPee candidate.
This excerpt from the article supports you:
As Speaker of the Florida House of Representatives, Rubio allowed legislation to die which would have clamped down on the state’s sanctuary cities–a move that has allowed Miami to become one of the nation’s most steadfast protectors of illegal immigrant criminals. This move won the praise of activists. Arturo Vargas, the executive director for the National Association of Latino Elected and Appointed Officials, said in 2010, “[Rubio] as speaker, kept many of those from coming up to a vote… We were very proud of his work as speaker of the House.”
Pandering, pandering.................