I worked in the White House Communications Agency (WHCA) from 88-94. I went TDY for Presidential visits 53 times during that period. Not to applaude the WH or Obama's staff or anything like that. I saw MANY times that the White House Staff would cover a background or install the requisite blue drapes across the back of a stage or platform. The operative words for WHCA troops (a joint service agency) is "Presidential Quality". This applies to lighting, sound, radios, comms and everything else. I don't find too much strange with what went on at Georgetown. Don't necessarily like it but it was mostly a "business" decision not based on anti-Christian leanings. Happens everywhere...
NGH