Ever since Supreme Court Chief Justice John Roberts issued a rare rebuke Wednesday, denying President Donald Trump’s criticism that there are “Obama judges” and “Trump judges,” Trump hasn’t been able to let it go.

He’s tweeted multiple times about Roberts’ response, first sending off a couple right after the Chief Justice gave his statement to the Associated Press.

Sorry Chief Justice John Roberts, but you do indeed have “Obama judges,” and they have a much different point of view than the people who are charged with the safety of our country. It would be great if the 9th Circuit was indeed an “independent judiciary,” but if it is why…… — Donald J. Trump (@realDonaldTrump) November 21, 2018

…..are so many opposing view (on Border and Safety) cases filed there, and why are a vast number of those cases overturned. Please study the numbers, they are shocking. We need protection and security – these rulings are making our country unsafe! Very dangerous and unwise! — Donald J. Trump (@realDonaldTrump) November 21, 2018

Even on Thanksgiving, it seems that Roberts was still occupying Trump’s thoughts.

Justice Roberts can say what he wants, but the 9th Circuit is a complete & total disaster. It is out of control, has a horrible reputation, is overturned more than any Circuit in the Country, 79%, & is used to get an almost guaranteed result. Judges must not Legislate Security… — Donald J. Trump (@realDonaldTrump) November 22, 2018

….and Safety at the Border, or anywhere else. They know nothing about it and are making our Country unsafe. Our great Law Enforcement professionals MUST BE ALLOWED TO DO THEIR JOB! If not there will be only bedlam, chaos, injury and death. We want the Constitution as written! — Donald J. Trump (@realDonaldTrump) November 22, 2018

Trump has made a habit of attacking the judiciary when various courts don’t come down in his favor, but this spat is highly unusual, with Roberts and other Supreme Court justices usually taking great pains to stay out of the partisan fray.