Karl says he’ll testify.
As Governor Siegelman states, bring him in, let him swear on a bible and either testify or lie under oath.
Rove has, of course, reportedly lied under oath on two other occasions, once in Texas and once in the CIA leak case. He’s probably thinking "three’s a charm."
But let’s do it, this time, in front of the teevee cameras. I’m sure Artur Davis–of Alabama–would welcome Karl’s testimony. And while he’s there, you might ask him all the questions about the USA purge he has refused to answer.