In 1999, he showed that most of the US cooled from 1950-1998
But that simply wasn’t going to scare anyone, so he got rid of all US cooling in his recent maps. Note too that he eliminated all cooling in South America and Africa, and turned them into warming.
The animation below shows a closeup of his changes.
You can see his handiwork graphically below.
This is what Obama calls “overwhelming science.” Mosher also says that this is all good.