Glenn Greenwald, liberal journalist and Edward Snowden's chief ally in the media, describes the prospect of Hillary Clinton winning the presidency as "horror and nightmares."

Greenwald, who helped former NSA contractor Snowden release secret details of government surveillance programs, was in Dallas on Friday for an event hosted by Allen West's National Center for Policy Analysis. He stopped by radio talk show host Glenn Beck's studio and joined him for an hour on the air.

While the two Glenns admitted they disagreed on much, they both took aim at over-the-top government surveillance -- and the supposed front runners to be president.

“I think that having a Jeb Bush vs. Hillary Clinton election, as sickening and depressing as that is, will be really clarifying,” Greenwald said. “Because, where is American meritocracy in this?”  

"Hillary Clinton and Jeb Bush are interchangeable," Beck said.

"They have the same funder, the same backers. I mean, Wall Street is just praying for Jeb Bush and Hillary Clinton," Greenwald added.

The two agreed that Sen. Elizabeth Warren vs. Sen. Ted Cruz would be far more interesting and better for the country.

On the issue of the NSA and Greenwald helping Snowden blow the whistle on U.S. surveilliance on Americans, Greenwald told Beck that most people who are critical of Snowden misunderstand his motivation (see clip below.) 

Greenwald said if Snowden's motives were something other than letting the American people know the scope of government surveillance, then he could have sold the secrets he smuggled out of the NSA,  passed it to America's enemies or posted it online.

"He didn't do any of that," Greenwald said. "Instead he did exactly what you would want a whistleblower to do."

Greenwald said Snowden offered the material to journalists on the understanding that information that would harm American security, beyond exposing surveillance programs, not be released.