The Senate Judiciary Committee’s 10 Democrats demanded an explanation Tuesday for why President Donald Trump’s Supreme Court nominee didn’t disclose a newspaper ad to them that carried her signature and called for an end to the “barbaric legacy” of Roe v. Wade.The Democrats, led by Judiciary Committee Ranking Member Dianne Feinstein, D-Calif., made the demand of Judge Amy Coney Barrett in a letter to the Justice Department’s Office of Legal Policy, which handles the pre-confirmation hearing vetting process of Supreme Court picks.“The failure to disclose the 2006 letter leads to additional ques…