CBS President Obama today expressed cautious optimism about the multi-purpose cap that has temporarily sealed the leaking oil well in the Gulf of Mexico. "The new cap is good news," Mr. Obama said. He added, however, "We won't be done until we actually know that we've killed the well and that we have a permanent solution in place. We're moving in that direction, but I don't want us to get too far ahead of ourselves." The newly-installed cap is a temporary solution that should be able to stop the flow of oil, or at least capture nearly all of the flowing oil -- up to 80,000 barrels a day -- until a permanent relief well is finished. The president said government scientists and outside experts are analyzing data to determine which of the two functions the new cap will serve. "It is our responsibilty to make sure we are taking a prudent course of action," he said. "The key right now is for us to make decisions based on science, ba...