Trump setting records for low presidential approval - Scott de Marchi interviewed for CNBC
Scott de Marchi, who teaches political science at Duke University, says his research suggests approval ratings tend to affect whether a president can persuade Congress to do his or her bidding. That's primarily true with complex issues like tax reform, where Americans care about the outcome but may not have strongly formed opinions. In those cases, Americans are more likely to support whatever plan the president proposes if they broadly approve of the president himself.
"The problem with Trump is that on any area like the budget or tax policy or even health care, people need to be led to a position to support," de Marchi said.