On their first opportunity since a new law took effect Jan. 1, seven casino-owning Native American tribes filed suit in Sacramento County Thursday against dozens of California card rooms, opening a new front in one of last year’s most expensive political battles.

California's Native American tribes are seeking to stop non-tribally owned casinos from offering Las Vegas-style card games like blackjack in a legal challenge that could dramatically upend the state's gambling industry.

A group of Native American tribes in California on Thursday sued dozens of licensed card clubs in the state, claiming they illegally provide so-called banked games similar to those offered by Las Vegas casinos where gamblers play against the house.