It may not have changed size, but other countries have gotten bigger. Especially "shithole countries". If other countries get bigger and the US does not, by virtue of US thought processes, the US has gotten smaller because it could have gotten bigger and it did not. USA #1 means USA gets all the things first, regardless of their value.

it actually shrank a bit in size (especially Alaska). this is side by side comparison (old vs new map): newworldsize.com/old-vs-new/united-states/