Amid Spain attacks, Trump says U.S. ready and borders secure

U.S. President Donald Trump speaks about the violence, injuries and deaths at the "Unite the Right" rally in Charlottesville as he talks to the media with Secretary of Transportation Elaine Chao (R) at his side in the lobby of Trump Tower in Manhattan, New York, U.S., August 15, 2017. REUTERS/Kevin Lamarque

WASHINGTON (Reuters) - U.S. President Donald Trump said the United States was prepared for any possible "trouble" and its borders were secure, as authorities in Spain grappled with an attempted attack near Barcelona one day after another attack left more than a dozen dead. "Homeland Security and law enforcement are on alert & closely watching for any sign of trouble. Our borders are far tougher than ever before!" Trump wrote in a post on Twitter on Friday. (Reporting by Susan Heavey)