A number of Democratic senators are growing increasingly wary of the administration’s plan to repeal Trump-era pandemic restrictions on the US-Mexico border that effectively blocked migrants from entering the US, setting up a rare clash between President Joe Biden and some members in his own party.A number of Democratic senators are growing increasingly wary of the administration’s plan to repeal Trump-era pandemic restrictions on the US-Mexico border that effectively blocked migrants from entering the US, setting up a rare clash between President Joe Biden and some members in his own party.