Full Disclosure

I think it would be great if Congress were required to specify at the beginning of each bill, unique topic within each bill and each amendment to a bill passed and sent to the President for signature; the exact language from the Constitution and its Amendments explicitly authorizing and empowering the Federal Government to engage in those activities. Furthermore, such disclosure should include ellaboration by Congress on the quoted Constitutional text so as to explain its understanding of why and how that language does indeed empower and authorize the Federal Government to engage in those activities. Full disclosure is required on a can of peas, why not Federal legislation?