Well, a lot of people did but 5 examples would be Vice President Joe Biden, Speaker of the House John Boehner, Senator John McCain, Senator John Kerry, and Chief Justice John Roberts.
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The 2011 State of the Union Address was on January 25, 2011See related link below for more information.
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They have attended all four since their union was formed in 1998: 1999, 2003, 2007 and 2011.
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