(WBAP/KLIF/AP) – Twenty-One Republican State Attorneys General have sent a letter to President Joe Biden criticizing his Covid-19 vaccination mandate for federal contractors. The letter sent Wednesday, is signed by Attorneys General from Texas, Nevada, Mississippi, Alaska and other states. They say the mandate “stands on shaky legal ground” and is confusing to contractors and could worsen supply-chain problems. They wrote that companies could be blacklisted for federal contracts unless they get their workers vaccinated on “an unworkable timeline’. Some legal experts say they think the mandate has strong legal footing.