It could be the author's own experience with the police in the article as he made a vague reference to the prof arrested at home. I avoid the big name left wing newspaper's net news sites as they are obviously biased and will twist everything to their own devious agendas. There are even stories of Obama getting snagged by the secret service for attempting to get through the front door of the white house at night without his key. In the first place, no one is going to get on the white grounds that doesn't belong there. Secondly a president is going to be closely shadowed by the secret service at all times in public. It's doubtful that they quiz him on which door he should or shouldn't go through with or without a key at night. It's their job to protect the pres at all times in a highly respectful manner. Hillary Clinton verbally beat the crap out of them but they took it and remained respectful. They got dirty following Bush around the ranch as he cut the brush in the back 40 but they handled it.