WASHINGTON (AP) — States that allow the use of medical marijuana would be free of federal interference under a bill passed by the Republican-controlled House.

The amendment was offered by a conservative from California.

Rep. Dana Rohrabacher pointed to an "overwhelming" change in public opinion about medical marijuana uses, such as improving the appetites of cancer patients undergoing chemotherapy.

Amendment 25 to House Resolution 4660 prohibits the funding of marijuana raids in the 33 states that have or are considering legalizing the plant for medical use. The measure passed 219-189 and now requires approval from the Senate.