Answer:
William Howard Taft tried to fix the antitrust laws and not the labor laws in the US.
Step-by-step explanation:
William Howard Taft was the 27th president of the united states.
Progressive belief in the favor of tariff reduction while Taft belief is different from progressive's beliefs
President Taft signed the Payne-Aldrich Act in 1909, which rather cut down the tariff, increased the tariff on some goods.
Due to this Act, progressive started withdrawing support from president Taft, because the Payne-Aldrich act increased the duty on printed paper which highly affects the publishers.