Oh, Sam. Ya coulda been a contender, Sam.
Polistra is sad that Sam Brownback has muddied up his own "brand", and thus his chances for the Presidency.
As oft repeated here and elsewhere, we are in desperate need of a wartime leader. Sam has many, even most of the necessary qualities. He stands on the long-running intellectual tradition of Rome, and decides modern questions based on that tradition.
He's been willing to carry the logic of true value and respect for life into distinctly unpopular places, such as torturing human time-bombs and forbidding abortion after rape.
He speaks clearly and precisely, though perhaps a bit too sparely, in old Kansas style. (More buzz and repetition is needed today; it's not enough to say a thing once. "I have spoken" is good when your listeners can accurately say "I have listened.")
Brownback has not taken the hard line on immigration. This would be fine if he had clearly and precisely stated his position and its justification. If he had shown how the economic interests of Kansas are best served by the McCain-Kennedy approach, no problem. He is still a senator, after all, so his primary job is serving the interests of Kansas, not running for President. Instead, he has evaded and backed away from the question, and on the final vote he played a Kerryish No-Then-Yes trick.
Problem.
When your main selling point is a principle-based mind, a highly rational decision process, and clear communication even when unpopular, you can't afford to knock out one of those pegs.
There's still time for "redemption", but it's getting narrow.