After the Senate Intelligence Committee issued a subpoena for some of Michael Flynn’s private documents, the panel’s chairman said the former national security adviser was refusing to comply. Republican Sen. Richard Burr has since hedged that claim saying, “General Flynn’s attorneys have not yet indicated their intentions regarding the Senate Intelligence Committee’s subpoena.” But it still raises the question, how is it that Flynn could simply refuse to honor the subpoena? The answer, according to legal experts, is that there’s no easy way to enforce it.