Obama to address 'energy security,' drilling plan expected

It is not clear if Obama will discuss specific proposals, or leave that to the Interior Department, which oversees leasing in federal waters. A White House spokesman did not respond to inquiries Monday night and Tuesday morning about potential energy policy announcements, and an Interior Department spokeswoman declined comment when contacted by The Hill Tuesday morning.

Wider drilling is also part of a broad energy and climate change bill that Sens. John Kerry (D-Mass.), Lindsey Graham (R-S.C.) and Joe Lieberman (I-Conn.) are crafting.

Already, energy legislation approved by the Senate Energy and Natural Resources Committee last June would shrink the size of the no-drilling buffer off Florida's Gulf of Mexico shores.

This post was updated at 9:23 p.m.