"If the adverse situation materializes it's foreseeable that the Mexican authorities respond in some way," Carstens told Milenio television late on Wednesday. "It's a contingency plan that we're discussing with the Finance Ministry. We hope we don't have to use it."
Without naming Republican nominee Trump, Carstens said there was an "adverse" candidate for Mexico in Tuesday's U.S. election, which is due to be held on Nov. 8. He also noted there could be market volatility following the vote, regardless of whether Trump or Democrat Hillary Clinton wins.
"Either way, we the authorities would . . .