When asked why he brought the nomination process to a halt, Sen. Shelby responded, "Well, I did it to get the attention of the administration."
That's right. There was no larger principle involved and nothing wrong with the nominees themselves. The CNN story explains
When asked about the qualifications of nominees he held up, Shelby replied, "Oh, I don't have any idea."Sen. Shelby continues to hold up consideration of three Air Force appointees, this at a time when U.S. forces are actively fighting in Afghanistan and at risk elsewhere.
He openly concedes he is blocking them for one reason: leverage. "That's part of the life up here," he said.
You can watch the whole sordid thing in the clip below.