 Later that month, on April 25, Carson expressed opposition to Harriet Tubman replacing Andrew Jackson on the $20 bill, the day after dubbing the replacement "political expediency", though he indicated interest in Tubman having another tribute.In late April, Carson wrote to the Nevada Republican Party, requesting the two delegates he won in Nevada be released and free to support whoever they want.On May 4, after Trump wrapped up the Republican nomination, he hinted that Carson would be among those who would vet his vice-presidential pick.