The more time passes in this presidential campaign, the clearer it becomes that Sen. Barack Obama is the shallowest, emptiest politician to come down the pike in a long time.

A few months back, Sen. John McCain was being introduced at a rally by radio talk show host who said some nasty things about Obama and repeatedly emphasized his middle name, "Hussein." Without prompting, McCain came out and condemned the statements the radio talker had made.

Contrast that with Obama and "progressive" radio talker Ed Schultz. At two events, Schultz labeled Sen. John McCain a warmonger.

In response, the best Obama appears to be able to do is send out his spokespeople to say that he doesn't agree with Shultz's comments.

Obama spokeswoman Jen Psaki said, "John McCain is not a warmonger and should not be described as such. He's a supporter of a war that Senator Obama believes should have never been authorized and never been waged."

Apparently Obama cannot disown Schultz any more than he can disown the progressive radio talk show host community.

Obama's pastor, Rev. Jeremiah Wright, can accuse the United States of the most outrageous and evil lies and Obama won't condemn him. Does it really surprise anyone that one of his supporters can call McCain a warmonger and Obama won't repudiate him?

Which begs the question: Where exactly is the line that, if crossed, would earn Obama's condemnation? Does that line exist at all?

We're really left with two options, either Obama has no backbone or he has no morals.

Obama either knows that certain things are wrong and he doesn't have the courage to stand up against them, in which case he's not qualified to be president. Or he doesn't know these things are wrong in the first place, in which case he's not qualified to be president.

Obama has had opportunity after opportunity for his "Sister Souljah" moment -- an opportunity to stand up to the most extreme parts of his base and demonstrate that certain things are beyond the pale. His failure to do so suggests that nothing is beyond the pale.