I actually disagree. If one wants to be cynical about it, Matthews is hedging his bets.
I personally think Matthews is conflicted: His Liberalism v. his Red-State sensibilities
Hedging involves making a deliberately noncommital or unexplicit statement as a counterbalance to previous statements. Where is the balance in saying if Bush pulls it off he deserves to be on Mt. Rushmore? I don't see it and if Matthews has a time of the day when he isn't trying to be Matthews I don't beleive he will let his Mt. Rushmore statement stand.
"I personally think Matthews is conflicted: His Liberalism v. his Red-State sensibilities"
That's my take on Matthews. He's like a lot of libs...he has no real principles so he shifts in the wind and can't decide what he things about a few issues like Iraq. He initially seemed conflicted over Klintoon's oval office behavior with interns, but when Matthews started seeing all the Democraps defending Klintoon, he bought into their talking points. He's buys into the left's moral equivalence arguments freely.
But, 98% of the time, he spouts the total liberal line replete with all the Democrap talking points.