With President Obama’s prime-time address about national security tonight ahead of the September 11 anniversary, U.S. officials are looking at ways to curb the power of ISIS insurgents by cracking down on flows of cash. Plus, American small businesses are often cast as the engines of the economy, and there’s new data this week showing that optimism among the people who run smaller enterprises has hit a post-recession high. This from the National Federation of Independent Business, drawn from surveys in August. But what about hiring at small businesses? Not so much optimism there. And when a company moves to lower its U.S. tax bill through a controversial maneuver called an “inversion,” this can become a kitchen table issue. Marketplace regular Alan Sloan joins us to explain.