"The question is, has this been transparent? No. Has there been stalling? Yes. Is there a possibility that what we're being told now is not true because it's not so plausible? Yes. Should there be independent investigation so we can move on? Yes."
Key in this story will be the White House response. This has lingered far longer than the president's allies have wanted -- in part because answers have been slow in coming from the administration thus far.