"It was settled by the Constitution, the laws, and the whole practice of the government that the entire executive power is vested in the President of the United States"

This quote by Andrew Jackson is describing the executive power of the President of the United States. It is saying that the Constitution, the laws, and the practice of the federal government have all concurred that the President of the United States has the supreme authority when it pertains to executive choices. This suggests that the President has the power to make decisions on behalf of the federal government, and those choices are binding. This power is approved to the President by the Constitution, and is more enhanced by the laws and the practice of the government. This quote is emphasizing the value of the executive power of the President, and how it is the supreme authority when it comes to executive decisions.