(AP) — As Kansas gay-marriage backers were celebrating a pair of U.S. Supreme Court rulings, Republican Congressman Tim Huelskamp was vowing to take action.

On Wednesday, the justices struck down a provision of a federal law that denies federal benefits to married gay couples. It also cleared the way for same-sex marriage in California.

The most colorful celebration was at a rainbow-painted Topeka house that’s across the street from a church whose members are known for protesting outside funerals with anti-gay messages. Leaders of the Planting Peace organization unfurled a large banner from the roof of the brightly painted house announcing “Bye, Bye DOMA.”

But Huelskamp was far from elated. He vowed to push for an amendment to the U.S. Constitution defining marriage “as the union of one man and one woman.”