DALLAS (AP) — After three terms in the U.S. House and two unsuccessful campaigns for the U.S. Senate, Colin Allred said he’s heard plenty about voters’ suspicions that politicians are just trying to make a buck in Washington. “‘What about the stock trading in Congress? What about people getting rich in Congress?’” Allred said they ask him regularly. “And I have to say to them, you’re absolutely right about that, too. We need to be better.” He’s challenging Rep. Julie Johnson in the Democratic