Yes, this is a Judicial Watch press conference,

Digenova speculates on the how the email situation will unfold. Note the date it was published and how things have come forward since:
Published on Mar 16, 2016
Joseph E. diGenova - Judicial Watch - Clinton Email Scandal

diGenova is pretty clear where he comes down on this issue:

Mrs. Clinton continues to say that this is a 'security review' that the FBI is doing. That is nonsense. It is also false. Mrs. Clinton, by the way, has given mendacity a bad name. It hardly seems possible for anyone to have lied so much about so many things of such import but she continues to do so with vigor and impunity you have to ask yourself Nixonian paranoia which led her to set up the private server really, really disqualifies her from the highest office in the land.

Go on...

The criminal probe is underway and when I was here last year, I said there would be one. I also said there would be a grand jury. There is a grand jury.

snip

There is a damage assessment underway in the intelligence community about all of the emails that are classified, but more particularly there is a damage assessment underway, an official damage assessment
which you have to do before you bring the cases that are going to be brought in the criminal investigation. And that damage assessment is to determine exactly what you are supposed to do when you know that very, very valuable classified information has been compromised. And
make no mistake about it, the Secretary, her entourage, Carol Mills, Patrick Kennedy, the Undersecretary for Administration, and all of her staff, engaged in a conspiracy to withhold information from the American people, Congress and the federal courts under the Freedom of Information Act under congressional subpoenas and under general litigation. They engaged in a conspiracy to obstruct the administration of justice in federal courts. That is now coming to light.

and

Michael Hayden, the former director of NSA and former director of Central Intelligence, said, and I like his phrase, "The original sin of this case was the placing of that server, unencrypted, in a basement, in Chapaqua, New York, for the conduct of all of her business and that of her staff." There is no doubt that the information -especially the information on the 25 top-secret emails- special access programs that no one will ever see because they are so sensitive, went through that server, was in those devices and foreign governments got them.

Hard to know where to stop transcribing because he's saying things which have now come out in May and June, so this talk in March is that much more compelling...

He goes on to say that ALL of the emails on that server became property of the States government, so the deletion of the 30,000 is absolutely a crime of stealing government property.

In the video, he describes himself as a conservative Republican. Here's what he tells us of his background:

Joseph E. diGenova, founding partner of the Washington, D.C. law firm of diGenova & Toensing, LLP represents individuals, corporations and other entities before the Federal courts, Congress, and U.S. cabinet departments and agencies on criminal, civil, administrative and investigative matters. In December 1992, he was appointed Independent Counsel in the Clinton Passport File Search matter. He was appointed Chairman of the Grievance Committee of the D.C. District Court in 1995 by the judges of that court. In 1997, he was named Special Counsel by the U.S. House of Representatives to probe the International Brotherhood of Teamsters. As a result of that assignment, he was appointed by the U.S. District Court, Southern District of New York, to sit on the Independent Review Board, which oversees the Teamsters pursuant to a 1989 Consent Decree. He is on that Board with former FBI and CIA Director William Webster and former U.S. Attorney General Benjamin Civiletti. In 2007, Mr. diGenova was retained by the New York State Senate to investigate then-Gov. Eliot Spitzer in the Troopergate matter.

His practice emphasizes representation to resolve disputes with various branches of the Federal government through negotiation, litigation, and/or legislation. He does white collar criminal defense work for individuals (such as the former CEO of BCCI) and corporations, conducting internal investigations as well. He represents individuals and organizations in Congressional investigations.

For four years, diGenova was United States Attorney, District of Columbia, which is the largest such office, having more than 400 attorneys. He supervised complex Federal criminal and civil matters including international drug smuggling, public corruption, espionage, insider trading, tax fraud, extradition, fraud, RICO, export control and international terrorism. Many of these prosecutions involved negotiations with foreign governments. He conducted a wide-ranging probe of corruption in the D.C. government, which led to the conviction of two deputy mayors. He led the prosecution of Israeli spy Jonathan Pollard. He was the Principal Assistant U.S. Attorney during the prosecution of attempted Presidential assassin, John W. Hinckley.

DiGenova has extensive experience on Capitol Hill. He was Chief Counsel and Staff Director of the Senate Rules Committee and Counsel to the Senate Judiciary, Governmental Affairs and Select Intelligence Committees. He has conducted confirmation, investigative, legislative and oversight hearings, drafted legislation and testified before both Houses of Congress. He also served as Administrative Assistant and Legislative Director to U.S. Senator Charles Mathias.

Mr. diGenova has published articles on criminal law, terrorism, and Congressional oversight and has spoken on those and other issues to various organizations throughout the United States. As part of his advocacy approach, he has appeared on Court TV, Lehrer News Hour, Meet the Press, Face the Nation, Nightline, 60 Minutes, Crossfire, This Week With David Brinkley, John McLaughlin’s One On One, Today Show, Good Morning America, and other national television programs. He received his undergraduate degree from the University of Cincinnati and his law degree from Georgetown University.

diGenova & Toensing, LLP
Washington, DC