Hundreds of fast-food workers rallied in multiple cities Monday to demand fast-food mogul Andrew Puzder withdraw his nomination for labor secretary. In Anaheim, California, hundreds of fast-food workers and their supporters marched on the corporate office of Puzder’s CKE Restaurants, the company that franchises the fast-food outlets Hardee’s and Carl’s Jr. In St. Louis, Missouri, hundreds flooded into the lobby of Hardee’s corporate headquarters to protest Puzder. Workers also rallied at Hardee’s and Carl’s Jr. outlets in Austin, Texas; St. Paul, Minnesota; and in other cities. The nationwide protests came as four Republican senators said they may not support Puzder’s nomination, threatening to derail his confirmation vote. The Washington Post reports Republican Senators Susan Collins of Maine, Lisa Murkowski of Alaska, Tim Scott of South Carolina and Johnny Isakson of Georgia say they may oppose Puzder. Puzder’s confirmation hearing is scheduled for Thursday after being delayed four times. He’s facing increasing criticism for reports of widespread sexual harassment at his chain restaurants, as well as labor and safety violations. He’s also under fire for allegations of domestic violence against his ex-wife, who even appeared on the "The Oprah Winfrey Show" in disguise in 1990 to speak about being abused. Politico reports senators have now viewed that March 1990 episode, which was titled "High-Class Battered Women," after the Oprah Winfrey Network turned over a tape of the show to lawmakers. Puzder’s ex-wife has since retracted the accusations of abuse.