Brent Bozell, Media Research Center (MRC) President, reacted:
"This exhibition is a direct assault on Christianity and the timing - the Christmas season! - shows how offensive it is intended to be. This federally funded vulgarity by the Smithsonian Institution must come to an end immediately. How dare anyone use a federal facility - The Smithsonian's National Portrait Gallery no less - to exhibit such obscene materials.
This is an insult to every Christian. This disgrace of an exhibition must stop immediately, but that is not all. We are also calling on Congress to launch a full investigation into the approval process of the Hide/Seek exhibit.
We are sending the following letter to Speaker Pelosi and Speaker-Elect Boehner on the House side, and to Majority Leader Reid and Minority Leader McConnell in the Senate to demand an investigation. Americans should not rest until we receive answers to why this exhibit was approved, and how the Smithsonian justifies using tax-payer dollars for such a display of anti-Christian bigotry."
Links to the letters are found here:
- Letter to Boehner: http://www.mrc.org/Press/uploads/LBB Boehner Letter.pdf 
- Letter to Pelosi: http://www.mrc.org/Press/uploads/LBB Pelosi Letter.pdf 
- Letter to McConnell: http://www.mrc.org/Press/uploads/LBB McConnell Letter.pdf 
- Letter to Reid: http://www.mrc.org/Press/uploads/LBB Reid Letter.pdf