U.S. Chief Justice John Roberts may have been blackmailed to approve Obamacare after being spied on by the NSA and CIA, says Larry Klayman, the attorney who has come to be known as "the NSA slayer" for his successful legal battles against the National Security Agency.

During an appearance Sunday night on Aaron Klein's New York City radio show on 970 The Answer, Klayman suggested the blackmail possibility when asked by a caller if the Supreme Court could be sued for its approval of the Affordable Care Act.

"Unfortunately, there's no way to sue the Supreme Court for decisions that it makes. There should be, and there should be a way to remove these justices for making decisions like that," explained Klayman, the founder of Judicial Watch who now heads Freedom Watch.

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"But let's take this possibility: Why did Chief Justice Roberts at the eleventh hour change his decision? He was going to side with the other justices and find that Obamacare was unconstitutional. Is it something that was dug up on him by the NSA or the CIA? Was that used against him to blackmail him?

"These are the kinds of things [the government is doing], and that's why it's so scary what's going on with the NSA and the CIA. It can happen in a democracy. So that may help explain it, and perhaps we can reach these issues through the NSA cases that we brought, the NSA/CIA cases. I intend to get the truth on this."

Klein himself sounded taken aback by Klayman's suggestion.

"This is actually a staggering response to believe the government could have spied on a Supreme Court justice ... and that information is somehow utilized ... against him to pass Obamacare," Klein said. "This is huge."

Klayman warned that "every aspect of Americans' lives is being accessed and monitored by the government."

"It's not just telephone metadata that's being monitored," he alleged. "They're also listening to the content, that's coming out in recent weeks.

"I'm a lawyer. I have an attorney-client privilege, and I can no longer talk to my clients on the telephone and expect that there's any confidentiality. It changes the whole nature of how you operate.

"We also know that the NSA and CIA – as Communist China, as Russia can do, as any sophisticated country – they can turn your cell phone on anytime and listen to you. And they do."

Listen to Part 1 of Larry Klayman's appearance with Aaron Klein:

Klayman said such activity is "simply not acceptable in a democracy."

"And even if they are not accessing our records directly, the fact that the American people know about it, and it's been documented what's been going on, it has a chilling effect on our ability to communicate and our ability to criticize the government or take strong action against the government.

"If the government wants to destroy you, it has to access the information that it can use to do it, and that's why this is so frightening. [It has] a greater capability than King George III had in 1776. The tyranny is greater today than it was at the time of the American Revolution."

Regarding the status of the legal cases against government spying, Klayman said, "The bottom line is this: Our so-called government is trying to delay final adjudication of the constitutionality of the CIA and NSA's programs, and as a ruse, President Obama is claiming he wants to make modifications to those programs. They're not modifications at all."

Klayman also said it's not just the Obama administration citizens should be concerned about.

"Can you imagine Hillary Clinton having the power to use this?" he asked.

Listen to Part 2 of Larry Klayman's appearance with Aaron Klein: