WASHINGTON — The Supreme Court should declare that Donald Trump is ineligible to be president again because he spearheaded the violent attack on the U.S. Capitol in an effort to overturn his 2020 election loss, lawyers leading an effort to keep him off the ballot told the justices on Friday.In a filing filled with vivid descriptions of the Jan. 6, 2021, violence at the Capitol, the lawyers urged the justices not to flinch from doing their constitutional duty and to uphold a first-of-its-kind Colorado court decision …