A California Republican state lawmaker is challenging the legality of a move by Democrats in the legislature to hire former U.S. Attorney General Eric Holder to help in any legal battles with President-elect Donald Trump’s administration. Assembly member Kevin Kiley has requested a formal ruling from state lawyers on whether the decision by Democratic legislative leaders to hire Holder and his firm, Covington & Burling, for $25,000 a month violated a provision in the state’s constitution that bans hiring outside counsel for work the state’s own lawyers can do. […] Kiley’s request came on the eve of hearings in the...