A problem with being older is that you remember when this was a 'new', intriguing threat instead of just a tired rehash of old rhetoric. To wit:
Streisand threatened to leave the country if the elder Bush was elected to a second term in 1992.
Eddie Vetter, Alec Baldwin, Robert Altman, Barbra Streisand and other Hollywood illuminati vowed to leave the country if Bush was elected in 2000,
Henry Rollins promised to leave the country if Bush was elected in 2004.
Mocking his brother, Stephen Baldwin promised to leave the country if Obama was elected.
It's just a stupid ploy used by celebrities to get on the evening news. Since none of these people ever follows through, who really cares? Even if they DID, who would really care?