Secretary of State John Kerry warned Saturday that a prolonged political crisis in Washington could weaken the United States globally, as the US government shutdown dragged into a fifth day. \"If it were prolonged, or repeated, people would begin to question the willingness of the United States to stay the course and its ability to, but that’s not the case and I don’t think it will be the case,” he told journalists at the Asia-Pacific Economic Cooperation forum in Indonesia\'s Bali.