Title 18 of the United States Code, Section 879 makes it illegal to threaten certain individuals guarded by the Secret Service, including the President, the Vice President and their families. At first blush, you wouldn’t think the statute has anything to do with the war over gay marriage. But consider this: that law makes it a federal crime to threaten the husband of Elizabeth Cheney, one of the Vice President’s daughters. But it does not outlaw threats against the lesbian partner of Mary Cheney, his younger daughter. Legally speaking, Mary’s partner is not a member of the Vice President’s family but, rather, a total stranger to it.