WASHINGTON, June 21 -- Sen. Susan M. Collins, R-Maine, issued the following news release: This week, U.S. Senators Susan Collins and Angus King joined the New England congressional delegation in introducing a Senate resolution congratulating the Boston Celtics for winning their record-setting 18th NBA championship against the Dallas Mavericks. "All of New England cheers whenever our Celtics return to the pinnacle of professional basketball," said Senator Collins. "I am proud to join my New Eng  more