There is NO job Americans won't do--there are only jobs we can't afford to do because some employer is trying to pad his profits by screwing his workers out of a fair day's wages.
I am an American citizen and I personally have climbed in the back of trucks full of garbage to act as a human compactor, cleaned toilets, and shoveled shit out from under an outhouse with a garden trowel without being able to take a bath for a couple of days after. I have even worked as a substitute teacher in sixth grade through high school for a while.
I'm sure there are worse things you've done you can add in the replies.
UPS is having trouble filling jobs at $8.50 an hour. I remember working for UPS as a seasonal employee back in 1992. My pay?? $8.00 an hour. Back then I thought that was a lot of money. 20 years and .$50 later, no wonder they can't find workers.