No need to look it up, Krauthammer has never been a conservative.
He was a liberal who drifted into libertarianism after being disillusioned during the Carter-Mondale fiasco.
Can you imagine what a doofus he had to be to write speeches for Mondale? He was working for the nitwits that Reagan crushed in a 44 state landslide.
Funny story: I worked civilian security at an Air National Guard base in Iowa after I left the Army. Knew the boiler repairmen pretty well since we called them often in the winter (and my uncle was among them) so I was surprised to see the most senior boiler tech walk up when we were guarding the newly arrived aircraft holding former Vice President Mondale. Wes (the boilerman) walked up to Fritz and hugged him like a long lost brother. The base commander, a brigadier general, was shocked and moved to separate them. Fritz explained that they were Masonic brothers and that Wes was actually above him in that organization.