House Oversight Republicans will begin contempt of Congress proceedings against former Secretary of State Hillary Clinton after she failed to appear for a deposition Wednesday as part of the committee's investigation into convicted sex offender Jeffrey Epstein. Why it matters: Both Clintons will face contempt of Congress proceedings — a rarely used congressional enforcement tool. The Clintons are refusing to comply with subpoenas, laying out in a Monday letter, obtained by Axios, to Oversight Chairman James Comer (R-Ky.) why they considered the subpoenas "invalid and legally unenforceable." "Since this started, we've been asking what the hell Hillary Clinton has to...