When Prince William and Kate visit the US, it is likely that  you will not see any pictures or video of them. 

Why?

The British Monarchy laid out a dress code for the media covering the Royal couple. 

“Journalists… should comply with the dress code on formal occasions out of respect for the guests of The Queen, or any other member of the Royal Family,” the British Monarchy website declares.

“Those wearing jeans or trainers will not be admitted and casually dressed members of the media will be turned away. This also applies to technicians,” the warning notes.

So in other words they want News Photographers not wearing jeans and wearing a coat and tie.

Good Luck with that.