Sen. Joseph Biden released 10 years of his tax returns this morning, putting on display the earnings that have made him one of the less wealthy members of the U.S. Senate and putting fresh pressure on his Republican counterpart to release her tax records. Sarah Palin has been asked to disclose her returns in part to determine whether she paid taxes on the $16,951 in per diem payments she received for working out of her home in Wasilla.
