Just look at the chain of events that unfolded in late April and early May:
1. Rosenstein prepares a memorandum outlining the reasons why Comey should be fired.
2. Trump fires Comey.
3. Rosenstein names a special counsel to oversee the Russia investigation.
4. Democrats and their partners in the discredited mainstream media begin clamoring that Comey was fired to derail the Russia investigation, and that his termination is tantamount to obstruction of justice.
The accusation of obstruction of justice is absurd on its face. If the termination of Comey was a crime, then Rosenstein would be at least as culpable as Trump in the matter. As the Deputy Attorney General, he would be exposed to criminal charges as well as charges of professional misconduct.
If there was even a remote possibility that the firing of James Comey was a crime, then Rosenstein would have to step down from his position as Deputy AG as a matter of course.
He hasn't stepped down as Deputy AG, and hasn't even recused himself. This would clearly mean that the Comey firing isn't even something that's being investigated by Mueller, who must report periodically to Rosenstein on the status of his investigation.
Sorry, but I disagree with that. He shouldn't go on multiple Sunday morning TV shows and be so adamant that there is NO investigation, just based on a hunch, in case there possibly is one. He puts his credibility at stake, and by extension, President Trump's. Susan Rice ring a bell?
He hasn't stepped down as Deputy AG, and hasn't even recused himself. This would clearly mean that the Comey firing isn't even something that's being investigated by Mueller, who must report periodically to Rosenstein on the status of his investigation.
That would appear to be making some major assumptions that both Rosenstein and Mueller are beyond reproach, and doing everything by the book. Rosenstein's appointment of Mueller, who had an innate conflict of interest due to his relationship with Comey, tends to indicate that Rosenstein is fallible. Mueller has a lot of questionable behavior in his past as well, especially under the Obama administration, where he botched the IRS investigation, etc.
I don't think Sekulow would have stuck his neck out unless he had been given some information by someone in the DoJ like Rosenstein that there was no investigation. Hopefully that's what happened, and there won't ever be an obstruction investigation. Will be interesting to see how the Washington Post fires back later today.