That recalls the story of Sam Houston talking to farmers in Salado, Texas about the coming Texas Revolution. One farmer said, “Hell, General Sam, we can whup them Mexicans with cornstalks.”
To which Houston replied, “True enough, sir, but they won’t be coming after us with cornstalks.”
So I agree with some of what you say, but ... Remember the Alamo, and Goliad.
While it's important to remember the lessons of history, I think it should also be pointed out that Mr. Houston didn't have the F-22, nor did he enjoy air dominance.
Whoever tries to "invade America" is going to have to get passed these things first...
It's hard to walk across a desert boarder carrying supplies, weapons and ammunition. It's even harder to drive across the desert - just ask Saddam Hussein.