Jenna Ellis, a lawyer who represented President Donald J. Trump after his loss in the 2020 election, admitted in a sworn statement released on Wednesday that she had knowingly misrepresented the facts in several of her public claims that widespread voting fraud led to Mr. Trump’s defeat. The admissions by Ms. Ellis were part of an agreement to accept public censure and settle disciplinary measures brought against her by state bar officials in Colorado, her home state. Last year, the officials opened an investigation of Ms. Ellis after a complaint from the 65 Project, a bipartisan legal watchdog group. The...