"I don't shrug about Afghanistan..."

I shrug about the use of the term 'invade' there. THAT was where the 9/11 stunt was planned. Not exactly your classic invasion to pursue an enemy and try to catch him.

Vietnam? Aw... c'mon... that was just a badly managed bit of escalation! We bombed in Laos & Cambodia, but like Vietnam, doing stupid things is not equal to 'invasion'.

"Invasion" is like "folk", you can't expand it infinitely to cover everything you want to refer to.

Mexicans invading?? Mercy, Riggo...same answer to you. They may be 'objectionable' and a problem, but let's avoid stretching labels beyond usefulness.