The End of Dual Citizenship?

I received this email on my Historians Against the War email list. Does anyone know about this?

"A woman who holds dual citizenship in Ireland and the United States says the Department of Homeland Security sent her a letter asking her to renounce her Irish citizenship. She says she has spoken with other people with dual citizenship who also received letters asking them to give up their citizenship of any country other than the United States

I'm a newspaper reporter for The Atlanta Journal-Constitution. I would like to hear from anyone who knows of dual citizens being asked by the federal government to renounce their citizenship of a country other than the United States. You can email me at mbixler@ajc.com ."

From: Mark Bixler, Reporter, The Atlanta Journal-Constitution, 72 Marietta St. N.W., Atlanta GA 30303, mbixler@ajc.com