Article I, Section 8 says:
"Clause 11: To declare War, grant Letters of Marque and Reprisal, and make Rules concerning Captures on Land and Water;
Clause 12: To raise and support Armies, but no Appropriation of Money to that Use shall be for a longer Term than two Years;
Clause 13: To provide and maintain a Navy;
Clause 14: To make Rules for the Government and Regulation of the land and naval Forces;
Clause 15: To provide for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions............"
There's a lot of stuff there. Now, notice Clause 15 very closely. It doesn't even say "repel Invasions by other countries", just "repel Invasions".
Amazing!!!!!! I gotta' tell ya', it's simply amazing what the Founders could figure out so long ago.
Clause 15 is about calling forth the militia, which has nothing whatsoever to do with the subject under discussion. Try putting just a little thought into your posts before hitting the Post button.