Wall Street surged on the eve of the US presidential election, with Democratic nominee Hillary Clinton's prospects brightening after the FBI said it would not press criminal charges against her over the use of a private email server. The iShares MSCI Mexico ETF, known of late as the "Trump ETF," soared 5.12 percent and notched its best day in more than five years. The exchange-traded fund is viewed as a barometer for expectations that Republican Donald Trump could win the election since his policies are considered negative for Mexico. While polls last week showed Trump had been closing the gap, at least five major polls on Monday showed Clinton still had the lead in the race for the White House. Wall Street had closed lower for nine days in a row through Friday, its longest losing streak in more than 35 years.