An updating tally of how often every member of the House and the Senate votes with or against the president By Aaron Bycoffe.

• From the FAQ – “Donald Trump has Republican majorities in both chambers of Congress — it’s the first time since Barack Obama’s first two years in office that the same party has controlled the U.S. Senate, the House and the White House. Trump’s ability to enact his policies, therefore, will largely come down to how often GOP senators and representatives buck the president’s agenda and, conversely, how often Democrats work with him. To help keep up with this, we’ll be tracking how often members agree with Trump and how that compares with expectations….”