GOP vice presidential candidate JD Vance Tuesday called out Kamala Harris and said if she wants to build a border wall, she has all the time. JD Vance's comment came as Republicans said Kamala Harris is doing a policy flip-flop on US southern border wall. Once she called this un-American and a medieval vanity project but now going by her commitment to reviving a bipartisan deal, she agreed to spending hundreds of millions on the border wall -- a pet project of Donald Trump.