This is what is called "treason"

My friend George Mellinger of Old War Dogs posted about this article by Vladimir Bukovsky:

During the Cold War, the behavior of Western politicians in their contacts with the Soviets varied quite widely, from hostile polemics to shameless collaboration. What was Senator Kennedy’s place in this wide spectrum?

Of course, Kennedy was not the only U.S. senator to visit the USSR. A few exceptions aside, however, they usually came as a group. As far as we can see in the documents, Kennedy always came alone.

Then, no other senator contacted the Soviets as often as Kennedy did. Nor were his relations with Moscow at all restricted to official visits. His chief of staff, Larry Horowitz, would journey there on Kennedy’s instructions several times a year. No other U.S. senator had a similar envoy.
…………………………………………………………………………….
The document, first released in the Sunday Times by Tim Sebastian in 1992, reveals how Kennedy secretly offered the KGB to work together to undermine President Reagan. This proposal was conveyed to the Soviets by former senator John Tunney in 1983.

That was not the only time when Tunney got involved in Kennedy’s games with Moscow. Another top-secret KGB report, published in 1992 in Russian Izvestia newspaper, says that in 1978 Kennedy “requested the assistance of the KGB to establish a relationship” between a firm owned by Tunney and the Soviets. The KGB report recommended the CPSU Central Committee to agree, because Tunney’s firm was already connected to one David Karr, a KGB agent in France (See, for example: Ted Kennedy was a ‘Collaborationist,’ by Herbert Romerstein. Human Events, December 8, 2003).

More secrets about Kennedy’s collaboration with Moscow became known after the famous defector Vasiliy Mitrokhin smuggled his invaluable archive of secret KGB documents to the West. In 2002, he publicized some of them in The KGB in Afghanistan working paper, published by the Woodrow Wilson International Center for Scholars. In 1980 Kennedy attacked President Carter over the latter’s tough opposition to the Soviet invasion of Afghanistan. As Mitrokhin reveals, the senator had evidently coordinated that with Moscow several weeks before — through Tunney and Egon Bahr, West Germany’s top Social Democrat who often had secret contacts with the KGB.

The article is pretty long. Read it in full, and you'll be horrified that Ted Kennedy remains a prominent politician instead of roting in jail. Essentially, Senator Kennedy was an agent of influence for the Soviet intelligence. To be sure, he was not in direct employ of any Soviet intelligence organization. Rather, he was helping them in order to gain political advantage for himself. This is similar to the way the Germans and the Bolsheviks used each other during World War 1. In essence, instead of receiving a monetary reward for his work for the foreign intelligence, Kennedy worked for political reward. It is still treason.