Ford Motor Co. (F) has informed the White House that it now requires everyone visiting its factories to wear face masks, but it’s not clear whether President Donald Trump will adhere to their request when he visits a Detroit-area plant on Thursday.

Trump is scheduled to tour a factory that has been repurposed to make medical breathing machines. President Trump has refrained from wearing masks in recent public appearances.

Ford recently struck a partnership with General Electric (GE) and 3M (MMM), combining resources and expertise to respond to a dire need for ventilators, respirators, and medical protective equipment as coronavirus spreads across the US. The goal of the partnership is to make the medical products most needed at this time easier to manufacture and more efficient.

“Ford has