Congress heads toward postelection fight over border wall

WASHINGTON (AP) — Congress is heading toward a postelection showdown over President Donald Trump's wall along the U.S.-Mexico border, as GOP leaders signal they're willing to engage in hardball tactics that could spark a partial government shutdown and the president revs up midterm crowds for the wall, a centerpiece of his 2016 campaign and a top White House priority.President Trump is promising voters at rallies across the country that Republicans will bring tougher border security in cam