Then they would find out what fighting the US is all about, death. See Wagner group in Syria.
https://www.independent.co.uk/news/world/battle-syria-us-russian-mercenaries-commandos-islamic-state-a8370781.html
There is death behind every blade of grass in America.
[para, some Japanese General]
He warned against invading the United States saying, "There would be a rifle behind every blade of grass."
SpyNavy
Garde la Foi, mes amis! Nous nous sommes les sauveurs de la République! Maintenant et Toujours!
(Keep the Faith, my friends! We are the saviors of the Republic! Now and Forever!)
LonePalm, le Républicain du verre cassé (The Broken Glass Republican)