In 2022 alone, banks made nearly $8 billion off of charging overdraft fees to low-income Americans whose accounts went below zero — sometimes charging broke customers as much as $37 per overdraft. Now, a new proposed rule by President Joe Biden’s administration would limit those fees to as little as $3. The Consumer Financial Protection Bureau (CFPB) announced the new proposed rule on Wednesday, which would limit overdraft fees to as little as $3 per transaction. The CFPB says the rule — which affects banks with more than $10 billion in assets — would save approximately 23 million American hou…