TOPEKA, Kan. — A 170-year-old rivalry is flaring up as Kansas lawmakers try to snatch the Super Bowl champion Kansas City Chiefs away from Missouri even though economists long ago concluded subsidizing pro sports isn't worth the cost.

The Kansas Legislature's top leaders endorsed helping the Chiefs and professional baseball's Kansas City Royals finance new stadiums in Kansas ahead of a special session set to convene Tuesday. The plan would authorize state bonds for stadium construction and pay them off with revenues from sports betting, the Kansas Lottery and additional tax dollars generated in and around the new venues.