The governor of California signed a law Monday that will permit college athletes to hire agents and make money from endorsement deals. The law could bring major changes to college sports in America. Many expect the National Collegiate Athletic Association, or NCAA, to challenge the law. The NCAA oversees college sports across the country. It generally does not permit students to accept money before or during their college athletic careers. Under the new law, students at public and private universities in California will be able to sign deals with advertisers such as soft drink makers or shoe companies. Student-athletes also will be able to earn money selling their own image or name, just like professional athletes. The law is set to go into effect in 2023.