Yes, I think you are dead right about that. It is the standard lie.

Part of running for office in the USA is repeating all the old mythology, all the old lies one more time so that everyone feels good and believes that you, the candidate, believe in America!

myths like...

"we live in the greatest country on Earth" (Ha!)
"we have the best medical system in the world" (grossly untrue)
"this is the land of the free" (as if there was no other such place???)

(Mind you, if having more atomic bombs and stealth bombers and cruise missiles and invading more other countries than anyone else does makes a place "the greatest country", well then, you're home free in the USA, right?) ;-)