Microsoft Corp. said it won't sell facial-recognition technology to U.S. police until there is a national law regulating its use, echoing similar commitments from Amazon.com Inc. and International Business Machines Corp. made this week. The trio of technology companies have called for clearer federal rules around the surveillance technology amid widespread concern about its potential for racial bias. Meanwhile, the popular fantasy card game, "Magic: The Gathering," removed several cards it deemed racist or culturally offensive from its database, including one depicting figures in pointed hoods. The Hasbro-subsidiary behind the game also pledged to review all cards for material deemed inappropriate. The moves are the latest public actions by businesses lining up to show their commitment to racial equality.