"Oil cleanup workers line Louisiana 1 in Grand Isle on Friday as the motorcade of President Barack Obama passes." In today's mailbag: Subject: Message From Grand Isle, Louisiana I witnessed something yesterday I wanted to share with my friends. It was disappointing, to say the least, but not at all surprising. I was in Grand Isle yesterday when we were visited by our president. Our street has about a dozen camps, one permanent resident on it; and yesterday we had a fair crowd of people. The first incident that was brought to my attention was four bus loads of,...