Former Republican presidential candidate Rick Santorum said that Mitt Romney needs to step up criticism of President Barack Obama’s “now habitual abuse of power,” in the wake of the decision to give amnesty to children of illegal immigrants.

“To me, the most outrageous thing was the process in which he did it,” Santorum said on CNN’s “State of the Union.” “The president basically said I’m going to selectively enforce the law.

“There’s a difference between someone who is actually out there on the street making a call as to whether to charge somebody with a crime or not than have a policy at the top saying that we are going to carte blanche order people not to enforce the law,” according to the former Pennsylvania senator.

Santorum said Romney is trying to walk a fine line in discussing immigration to show he is not hostile to Latinos, but the GOP nominee can do more in terms of criticizing Obama on his use of power.