Cold hard cash. It's good everywhere you go, right? You can use it to pay for anything. But that's not the case here in Louisiana now. It's a law that was passed during this year's busy legislative session. House bill 195 basically says those who buy and sell second hand goods cannot use cash to make those transactions, and it flew so far under the radar most businesses don't even know about it. "We're gonna lose a lot of business," says Danny Guidry, who owns the Pioneer Trading Post in Lafayette. He deals in buying and selling unique second hand...