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“Well, I’m suspicious, of course,” Mr. Cheney said. “It’s not a place where you would normally go if you are interested in freedom of speech.”

Mr. Cheney said the U.S. government should be “very aggressive” with Hong Kong about getting Mr. Snowden back, but “I’m not sure it will do any good.”

The former British colony reverted to Chinese sovereignty in 1997 but has some features of statehood, including an extradition treaty with the U.S., a pact China itself doesn’t have. But Beijing has the right to veto extraditions on national security and diplomatic grounds.

Mr. Graham, appearing on NBC’s “Meet the Press,” said, “We need this program and he’s compromised it, and he should be held accountable.”