Federal lawmakers representing the Los Angeles region warned that the 2028 Olympic and Paralympic Games could be a congestion nightmare if the federal government doesn’t fulfill a request for billions of dollars for transportation projects.

Rep. Laura Friedman said Wednesday the lack of financial assistance could increase traffic, result in fewer buses and worsen public transit reliability during the Games.

“That will be a terrible result, not just for Los Angeles, but for the whole nation,” Friedman said.