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.
The Heliocentric view comes from the idea that t<u>he sun is the center of the universe and all planets revolve around it</u>. It's the opposite of geocentric which states that the earth is the center whilst the sun revolves around it.
The delivery of essential services to key constituencies.
They are expected to repeat what their teachers say.
Hope this helps!
