U.S. Treasury yields fell on Tuesday as markets reopened after being closed for Memorial Day on Monday and investors braced themselves for a vote on a debt ceiling deal ahead of the June 5 deadline. At 5:33 a.m. ET, the yield on the 10-year Treasury was down by 10 basis points to 3.719%. The 2-year Treasury was trading more than 7 basis points lower at 4.514%. Yields and…