Article IV outlines States' rights, not the enumerated Congressional powers.
C'mon Lurker, be consistent. You claimed that since Congress does not have explicit power to promote research, NASA funding is unconstitutional. Just keeping you honest about your position.
The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion;
There's hardly any big words in this snippet at all so it shouldn't take too awfully long for you to read and understand it.
Check that...reading may only take a moment. Understanding, well that's another matter entirely.
L