What was a significant provision of the 1947 Taft-Hartley Act?

The significant provision of the 1947 Taft-Hartley Act pertains to restricting union contributions to federal candidates. This act was part of a larger effort to regulate labor relations in the post-World War II period, and it aimed to balance the power between labor unions and the federal government, as well as individual employers.

By imposing restrictions on union contributions, the Taft-Hartley Act sought to mitigate the influence of unions in the political sphere, particularly in elections. This was significant at the time as many believed that unions had become too powerful and were unfairly influencing the political process. This provision also aligned with the broader political context of the era, in which there was a growing concern about the role of organized labor in American politics.

In contrast, the other options do not accurately represent provisions of the Taft-Hartley Act. The act did not prohibit unions from conducting strikes outright, nor did it allow corporations unlimited contributions to candidates or mandate the direct election of senators. The latter two issues relate to different aspects of campaign finance and legislative reforms that were discussed in other contexts.