Moratorium wouldn't affect 99 percent of Gulf production

On her show last night, Rachel Maddow looked at the basics of drilling and production and exactly how much activity the Obama administration's proposed moratorium on drilling would stop.

In the first clip, Maddow explains how the Gulf oil industry works:

In the second, she explains that the moratorium would actually have affected fewer than 1 percent of the 3,600 rigs in the Gulf: