Ping us when you get your bathtub fleet in the Gulf of Mexico.
According to you, we're at war. Why do you demand that we not fight?
The invasion by foreigners whether they're Mexicans or others who travel through Mexico can be stopped, going into Mexico to stop them is not the answer.
You're saying that Mexico is invading the United States, which is an act of war against the United States by Mexico. A properly Clausewitzian path would involve the invasion and conquest of Mexico, followed by refashioning Mexico into something that we deem more congruent with our national interest.
Great White Fleet that Theodore Roosevelt sent to tour the world in 1907 was a show of force as a deterrent and to make a point.
You're saying that we are at war now, and that said war is well underway. But then you speak of deterrence.
Deterrence is a pre-war issue. Once the war has started, deterrence has failed.
You demand that we not fight a war, even as you claim that we are under invasion. Your positions are mutually contradictory.