U.S. stock index futures pointed to a rally on Monday after the U.S. reached an agreement with Mexico on tariffs, easing some of the trade concerns which have weighed on the market since early May. Dow futures indicated a positive open of 124 points. Futures on S&P and Nasdaq pointed to gains of about 0.4%. President Donald Trump announced Sunday that proposed tariffs on Mexican imports would be suspended indefinitely. Trump said in a Twitter post Sunday that he has “full confidence” that ...