Final answer:
The Wagner-Murray-Dingell Bill was opposed by business interests and conservative legislators, with notable figures like Robert Taft playing a key role in resisting pro-labor legislation.
Step-by-step explanation:
The Wagner-Murray-Dingell Bill, which aimed to expand social security and health benefits in the United States, faced opposition from business interests and conservatives during the time of its proposal. A significant effort to oppose this bill was staged by legislators like Robert Taft and Fred Hartley, who went on to draft the Taft-Hartley Act. This Act sought to limit the powers of labor unions greatly, showing the level of resistance to pro-labor legislation at the time.
Business interests, fueled by the perception that the bill went too far in bolstering unions and labor rights, mounted a resistance against the Wagner-Murray-Dingell Bill, which reflects the deeper historical context of labor and management disputes in the United States.