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