WASHINGTON — President Donald Trump rebuked his own party’s Senate leader on Wednesday for the collapse of the Republican push to repeal and replace the Obama health care law, using Twitter to demand of Senate Majority Leader Mitch McConnell, “Why not done?”

Trump was firing back at the Kentucky Republican for telling a home-state audience this week that the president had “not been in this line of work before” and had “excessive expectations about how quickly things happen in the democratic process.”

The exchange came less than two weeks after the Senate rejected repeated attempts by McConnell to muscle legislation through his chamber scuttling President Barack Obama’s health care law. The House approved its version in May, but its Senate failure — thanks to defecting GOP senators — marked the collapse of the party’s attempt to deliver on vows to erase Obama’s statute it has made since the law’s 2010 enactment.

“Senator Mitch McConnell said I had ‘excessive expectations,’ but I don’t think so,” Trump tweeted. “After 7 years of hearing Repeal & Replace, why not done?”

Trump had repeatedly used Twitter to pressure McConnell to find the votes to approve the health care bill, even saying hours after its failure that GOP senators “look like fools.” But his tweet Wednesday was an unusually personal reproach of the Senate veteran who is deeply respected by his GOP colleagues.