Donald Trump ignited a new feud with the attorney general of Michigan after she called him a "petulant child" for refusing to wear a face mask in public on a visit to the state.
The US president declined to wear a mask in front of cameras at a Ford plant, which has been making ventilators, although he did put one on for a private part of the tour.
Dana Nessel, the Michigan attorney general, also took aim at Ford, threatening legal action against the company for allowing Trump to violate the state governor's executive order on masks. The order stipulates that any person who is medically able must wear one in enclosed public spaces.
![US President Donald Trump speaks to the press before his visit to a Ford manufacturing plant. Photo / Getty Images](https://www.nzherald.co.nz/resizer/v2/ECJ5BGGTQ5QUGVKHQ7FCUXVN7U.jpg?auth=150319f688bad651a24174a94254a4a1de11b9836aaf0104a8d8815d0af5a5e8&width=16&height=11&quality=70&smart=true)
Trump responded on Twitter: "The Wacky Do Nothing Attorney General of Michigan, Dana Nessel, is viciously threatening Ford Motor Company for the fact that I inspected a Ventilator plant without a mask.