Police warn: 'Do not use outdoor blue Post Office bins'
so this is why there are USPS mail issues:
check washing. . .
you need to use certain types of pens to prevent the use of personal checks to prevent it if your mail gets stolen. .
The reasons here can happen within the post offices as well, or from truck heists, etc. .
This is why i use electronic payments from my on line bank account wherever possible, I still have unused check books from the 2000, and I don't need waste time going to the bank, because I have better activities to do during the day than stand in line at a bank.
I won't be judgmental about who is doing this, but they are people who lack respect for the US systems . . .