The prospect of the Senate quickly accepting $2,000 stimulus checks dimmed further, with the chamber concentrated on overriding President Trump’s veto of the yearly defense-policy bill before the session closed and Republican leaders pushing aside Democratic demands for a stand-alone vote on the bigger payments.Mr. Trump’s late push to boost the size of direct payments in the current $900 billion coronavirus-relief legislation to $2,000 form $600 has scrambled the last days of the 116th Congress. Democrats Took up Mr. Trump’s push for larger checks, speedily passing a bill through the house with some support from a few Republicans and attempting to approve it in the GOP-led Senate.On Wednesday, Senate Majority Leader Mitch McConnell shut off a vote on the checks, the second time he has objected to Senate Minority Leader Chuck Schumer’s wishes to vote on media companies and reviewing purported voter fraud in the 2020 election. Mr. McConnell hasn’t revealed a plan to take up that legislation.