The taft-hartley act of 1947 restricted the rights of

labor unions.

The act restricts Unions in the following ways.
-It outlaws "secondary strikes;" a union boycotting an unrelated business for which it has no quarrel.
-It outlaws "closed shops;" a contract between an employer and a union stating the employer can only hire union workers.
-It requires unions to give the government an 80 day notice before striking.
-It bars unions from making a campaign donation for someone running for federal office.