Why won't Dodd and Conrad release their documents regarding Countrywide?

From the WSJ:

The three Republican and three Democratic Senators say they conducted an exhaustive probe and inspected 18,000 pages of documents. They say they found "no substantial credible evidence as required by Committee rules" that the Senators received mortgage rates or services that weren't commonly available to the public, and thus did not violate the Senate gift ban.

We'll have to take their word that the evidence wasn't "substantial," because they didn't release those documents, nor did they encourage Mr. Dodd to release any of his records. Readers will recall that in February Mr. Dodd staged a peek-a-boo release with selected reporters but did not allow anyone to have copies of the documents. If the evidence was so clear-cut, why the months of stonewalling?

The Associated Press may have the answer. AP recently noted that among the peek-a-boo papers were two documents titled, "Loan Policy Analysis." Reports AP, "The documents had separate columns: one showing points 'actl chrgd' Dodd — zero; and a second column showing 'policy' was to charge .250 points on one loan and .375 points on the other. Another heading on the documents said 'reasons for override.' A notation under that heading identified a Countrywide section that approved the policy change for Dodd."

How does Mr. Dodd explain that one? He may not have had to. The Senate ethicists don't seem to have required either Mr. Dodd or Mr. Conrad to provide sworn testimony. . . . .