U.S. lawmakers have increasingly used the debt ceiling to re-litigate congressional spending, risking default and sparking debate over whether to abolish the ceiling.

President Donald J. Trump has wide latitude to enact the sweeping changes to U.S. foreign policy that he has promised, but his executive authority is constrained by congressional legislation, treaty …

President Trump’s reversal of half-century-old U.S. policy will in practice change little in the strategic territory occupied by Israel, but it could have far-reaching diplomatic reverberations.

President Trump’s decision to recognize Jerusalem as Israel’s capital and relocate the embassy there could set back the Israeli-Palestinian peace process.