Final answer:
The incorrect statement is that the Norris-LaGuardia Act subjects picketing and boycotting to federal court injunctions, when in reality, it protects these activities by limiting federal courts from issuing injunctions against them.
Step-by-step explanation:
The statement that is incorrect concerning federal laws governing labor-management relations is, "Picketing and boycotting are subject to federal court injunctions, under the Norris-LaGuardia Act." In fact, the Norris-LaGuardia Act actually protects the right of workers to engage in peaceful strikes, picketing, and boycotts by limiting the power of federal courts to issue injunctions against such activities, which is contrary to what the statement suggests.
The Taft-Hartley Act, also known as the Labor-Management Relations Act of 1947, did indeed place various restrictions on union activities, but it did not limit the right to picket or boycott through Norris-LaGuardia. Instead, the Taft-Hartley Act prohibited certain union practices, such as closed shops, and granted states the ability to pass right-to-work laws. It also included provisions such as requiring unions to give advance notice before a strike, and empowered the President with the ability to intervene in strikes that could impact the national interest.