The Bush administration announces $1 billion in aid but no military assistance.
Nearly 1 million people moved inland from the Gulf Coast over the weekend. The mass evacuation is a first test of a new and complex safety plan.
McCain might skip the four-day gathering completely, says convention chair Boehner.
It gingerly considers how to set consequences for Russia and maintain cooperation.
Medvedev approved the move a day after parliament voted unanimously in favor of it.