The National Industrial Recovery Act of 1933 (NIRA) was a law that was passed by the Congress in order to authorize the President to regulate industry. The main focus of such legislation was stimulating economic recovery during the Great Depression. One of the most controversial parts of this law was that which concerned unions. The law protected the collective bargaining rights for unions. It also encouraged union organizing and guaranteed trade union rights.
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.
I believe the answer to your question would be A. Western European Capitalistic Country, Hope this helps a bunch :)
