In a major early hurdle to Donald Trump’s trade agenda, Republicans indicated on Monday they are not ready to support his proposed tariff on U.S. companies that leave the country, reopening old rifts between the President-elect and his own party. Trump repeated on Sunday morning a campaign promise to set a 35% tax on businesses that leave the country—leaving many Republicans on Capitol Hill to respond the next day with guffaws, grimaces and nervous hedging. “I do not want a trade war.