Will Obama's Justice Department prosecute Obama's CIA?: Is this the Obama administration's Watergate?

Politicians are starting to talk about this in Watergate type terms.  From Politico:

. . . “Heads will roll,” Graham said if an investigation confirms Feinstein’s allegations. “If what they’re saying is true about the CIA, this is Richard Nixon stuff. This is dangerous to a democracy, heads should roll, people should go to jail, if it’s true,” Graham said. “The legislative branch should declare war on the CIA — if it’s true.”“There needs to be an investigation of this whole situation,” McCain said. “It’s very disturbing.”
“This raises a very troubling set of questions,” said Sen. Ron Wyden (D-Ore.), a frequent critic of the vast domestic surveillance. “We are right at the heart of the issue of how Congress goes about effectively doing oversight.” . . .

If the CIA really secretly removed documents from computers used by the Senate Intelligence Committee panel to investigate a controversial interrogation program, it would seem that Obama's Department of Justice would have no problem prosecuting those responsible.  Even if the Obama administration secretly approved of this operation, they still might want to prosecute those involved.  But if the Obama administration doesn't prosecute those involved, it would indicate that Obama's CIA was doing what the Obama administration really wanted done.  From the Washington Post:

The head of the Senate Intelligence Committee on Tuesday sharply accused the CIA of violating federal law and undermining the constitutional principle of congressional oversight as she detailed publicly for the first time how the agency secretly removed documents from computers used by her panel to investigate a controversial interrogation program. 

Sen. Dianne Feinstein (D-Calif.) said that the situation amounted to attempted intimidation of congressional investigators, adding: “I am not taking it lightly.”

She confirmed that an internal agency investigation of the action has been referred to the Justice Department for possible criminal prosecution. And she said that the CIA appears to have violated the Fourth Amendment, which bars unreasonable searches and seizures, as well as various federal laws and a presidential executive order that prevents the agency from conducting domestic searches and surveillance. 

She has sought an apology and recognition that the CIA search of the committee’s computers was inappropriate, she said. “I have received neither,” she added. 

The comments by Feinstein, traditionally a strong advocate for the intelligence community, blow wide open a dispute that has simmered in recent weeks. . .  .