We have before us one of the most important duties of Congress, and that is to decide whether or not we will be involved in war. I think it is inexcusable that the debate over whether we involve the country in another country's civil war, would be debated as part of a spending bill, and not as part of an independent, free-standing bill. It goes against the history of the country. -Senator Rand Paul Speech, September 18, 2014
Which power of Congress is Senator Paul probably most concerned about based on this passage?

The correct answer to this open question is the following.

The power of Congress that Senator Paul probably most concerned about based on this passage is the Power to Declare War.

The United States Constitution states on Article I, section clause 1, that the United States Congress has the power to declare war. The Constitution grants Congress with expressed powers and this is one of them. That is why Senator Rand Paul is reflecting on the great responsibility Congress has regarding thus power of declaring war against another nation.

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