The empty chair at the SOTU

At the State of the Union on Tuesday, Rep. Vicky Hartzler (R-Mo.) said that the empty chair President Barack Obama left in the first lady’s box for victims of gun violence should have been left for “those who’ve had their heads cut off or killed through ISIL, because that was the true cause of the problem in San Bernardino.”

Story here.

 
Why did this dress cost $2,000?  Even if it was donated by the designer.