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Which branch of government has the power to regulate commerce in the United States?

  1. Executive branch.

  2. Legislative branch.

  3. Judicial branch.

  4. State governments.

The correct answer is: Legislative branch.

The legislative branch, also known as Congress, has the power to regulate commerce in the United States. This includes the regulation of trade between states and with foreign nations. The executive branch does not have the authority to regulate commerce, as this would go beyond its designated role of enforcing laws. The judicial branch also does not have the power to regulate commerce, as this would be considered an executive function. While state governments have some regulatory powers, they do not have the overarching authority to regulate commerce on a national scale. Therefore, the legislative branch is the correct answer.