A federal lawsuit filed Tuesday alleges that two local casinos enabled sex trafficking by Nathan Chasing Horse. Chasing Horse , who played Smiles a Lot in the movie “Dances with Wolves,” was sentenced to 37 years to life in prison Monday after being convicted of sexually assaulting two victims . The civil suit names as defendants Boyd Gaming Corp., the Cannery, Station Casinos and Santa Fe Station. It does not name the two plaintiffs but identifies their trafficker as Chasing Horse. The allegations span the period from 2014 to 2022. Alex Acuna, a spokesperson for Station Casinos, declined to comment. Boyd spokesperson David Strow also declined to comment. Boyd owns the Cannery. Station Casinos owns the Santa Fe. Plaintiffs’ attorney Alex Marcinko said in a phone interview that the goal of the suit is to obtain “institutional accountability.” “People like Nathan Chasing Horse don’t operate in a vacuum,” he said in a phone interview.…