Mo Brooks Urges Biden to Reverse Military Base Mask Mandate: 'Unknown Cancer' Risk On 7/20/21 at 12:03 AM EDT Rep. Mo Brooks (R-Ala.) is urging President Joe Biden to end "discrimination" against servicemembers who refuse to abide by a mask mandate for those unvaccinated against COVID-19 at an Army base in Alabama. Brooks insisted that wearing face masks carries "unknown cancer and other health risks" in a letter to Biden on Monday. The Alabama Republican said that it was "un-American" for Major General David J. Francis, commanding officer of Alabama's Fort Rucker, to issue an order last week that required servicemembers to be fully vaccinated or wear masks amid the ongoing pandemic.