I don't think he is.
Perhaps for the USA he is, but that tells you a lot about the USA.
No, it tells a lot about the mindset of you and others who still believe in the "American liberals would be right-wing in Europe" falsehood.
That BS was already debunked: "The Republican Party leans much farther right than most traditional conservative parties in Western Europe and Canada...The Democratic Party, in contrast, is positioned closer to mainstream liberal parties."
SOURCE: https://www.nytimes.com/interactive/2019/06/26/opinion/sunday/republican-platform-far-right.html
Liberal parties in Europe aren't left of center in Western Europe.
That's Lib Dem, LREM, etc. I don't consider that left-of-center really. That's center. In some countries even right of center due to economic positions of mainstream liberal parties (like FDP). And in a lot of ways Democrats also resemble christian democratic parties that aren't too much right of center, like CDU.
Agree with Republican being further right than most traditional conservative parties though.
You may dislike me for saying this but I stand by this. I don't think i'm saying anything controversial here.