The perpetrator of the shooting in the US state of Wisconsin was present at Trump's presidential election rally.
At least five people were wounded during a shooting at a San Antonio, Texas, flea market on Sunday, according to police
Shooting in the US city of Washington left one dead and 21 wounded.
The shooting in the city of Peoria in the US state of Illinois left at least 12 people injured.
Two people are dead and eight people have been injured after a shooting at a South Carolina nightclub early Sunday morning.
A shooting on Saturday at a Walmart distribution center in Red Bluff, California in the US, left two people dead, a hospital official said.
A shooting at a warehouse in the US state of Illinois has killed two people, police say the gunman also killed himself.
The shootings in the last 24 hours in different parts of the United States left 82 people dead and wounded.
Americans grappling with the rapidly-spreading Coronavirus purchased more guns last month than at any other point.
Five people have been injured, two of them critically, in a shooting near a southeast Fort Worth park Sunday evening, police said.