Administration officials told the top Senate Democrat the president would release frozen funding for the Gateway project if the transportation hubs were renamed for him.
The video clip that President Trump posted in a late-night flurry of social media activity caused an unusually strong and public outcry from members of his own party.
The Democratic primary to replace Gov. Mikie Sherrill of New Jersey in Congress is still too close to call. Much of the advertising focused on opposition to the president and his immigration policies.