Yes, they can. Bills are "legal tender" and must be accepted in any denomination (if you accept cash at all), but coins, while they have value, are not "legal tender".
>>Yes, they can. Bills are "legal tender" and must be accepted
>>in any denomination (if you accept cash at all), but coins,
>>while they have value, are not "legal tender".
Coins are legal tender according to the United States Coinage Act of 1965.
"United States coins and currency (including Federal reserve notes and circulating notes of Federal reserve banks and national banks) are legal tender for all debts, public charges, taxes, and dues. Foreign gold or silver coins are not legal tender for debts."
If you have a different reference in federal code please provide it.
The Coinage Act of 1965 states thats all US coins in any quantity are "legal tender".