Mark Cuban mocks Trump’s tariff ideas at Harris campaign rally as Elon Musk tours PA with pro-Trump PAC CNBCBillionaire Cuban stumps for Harris as Musk hits trail for Trump ReutersMark Cuban Joins Harris on Trail to Hit Trump Over Tariffs BloombergFrom the ‘Shark Tank’ to the campaign trail: Mark Cuban teams up with Kamala Harris Fox NewsMark Cuban will campaign for Kamala Harris in 3 key swing states Business Insider