President Donald Trump speaks during an event to declare the opioid crisis a nationwide public health emergency in the East Room of the White House, Thursday, Oct. 26, 2017, in Washington. Seven in 10 Americans say the nation's political divisions are at least as big as during the Vietnam War, according to a new poll, which also finds nearly 6 in 10 saying Donald Trump's presidency is making the U.S. political system more dysfunctional.