New Jersey Gov. Chris Christie says he'd revive enforcement of federal marijuana law in states that have legalized recreational use of the drug if he were president.

And he says if that position causes him political trouble in battleground Colorado, so be it. He says he won't pander to voters or hide his positions for political expediency.

Federal and some state laws on marijuana are in conflict. But the federal government has adopted a hands-off approach to states with lenient marijuana laws. The Justice Department has told such states that it won't challenge their laws so long as marijuana is tightly regulated. Colorado is one of them.

Christie spoke Sunday on CBS' "Face the Nation." He says he'll decide this month whether to seek the Republican presidential nomination.