Here's a second lawyer saying the same thing.
Constitutional expert Laurence Tribe says Donald Trump can be impeached for false Obama wiretap claim.
Trump’s accusation of lawless wiretap by Obama, unlike the racist claims Trump made as a private citizen about Obama’s birth, was made by Trump as POTUS, with strong suggestion he had ‘just learned’ in that capacity about Obama’s alleged crime, was a grave abuse of power of presidency to slander a private citizen as well as a former president, an abuse I’d classify as a high crime against the nation and one of its most distinguished citizens.