Here's a 50 foot extension cord that's made in the USA and even has red, white, and blue colors.
https://www.amazon.com/dp/B004RH33RE?th=1
It occasionally goes on sale for under $30, but even at $40 it's not a bad deal to support made in the USA.
Extension Cord not made in China
Re: Extension Cord made in the USA
If you don't need a heavy-duty extension cord, I just bought myself this set of four GE indoor extension cords, all made in the Philippines:
https://amzn.to/3ZqtJVm

I was a little skeptical at first, but sure enough when I received them, they say "PHILIPPINES" on every plug. Thrilling to see that GE (or whoever owns their licensing now, I keep losing track) is finally waking up.
https://amzn.to/3ZqtJVm
I was a little skeptical at first, but sure enough when I received them, they say "PHILIPPINES" on every plug. Thrilling to see that GE (or whoever owns their licensing now, I keep losing track) is finally waking up.