President Obama said Tuesday that he is not intently focused on the “day-to-day gyrations of the stock market,” comparing the downward roller-coaster on Wall Street to the fickle nature of political polls. “You know, it bobs up and down day to day,” Mr. Obama said. “And if you spend all your time worrying about that, then you’re probably going to get the long-term strategy wrong.” With British Prime Minister Gordon Brown at his side in the Oval Office, Mr. Obama said it was more important to focus on whether lines of credit were flowing, businesses were making new investments and...