WASHINGTON — Facing the threat of being held in contempt of Congress, Bill and Hillary Clinton on Tuesday agreed to testify before the House Oversight Committee about convicted sex offender Jeffrey Epstein . Democrats now say Republicans have established a new precedent when it comes to Congress’ ability to subpoena and haul in past presidents, first ladies and family members under threat of criminal charges if they refuse — a precedent they warn the GOP and Oversight Chairman James Comer, R-Ky.