https://www.reuters.com/article/us-usa-defense-congress/congress-faces-christmas-showdown-with-trump-over-tech-and-defense-bill-idUSKBN28H2DQ >WASHINGTON (Reuters) -The U.S. Congress will return to Washington during its Christmas holiday break if necessary to override President Donald Trump's threatened veto of a $740 billion defense bill, lawmakers said on Monday, with one senior Republican saying Trump's stance risked "punishing" the troops.