 Even if he is sentenced and serving time in prison, he could still serve as senator, but he could also be expelled. Top Democrats are calling for him to resign. And Wall Street rose to record highs today thanks to a big boost from the Dow. Market analyst Art Hogan. A broader market is going to be a much healthier and more secure place for investors to be in. It's the Dow's best close in 13 months. CBS News Brief. I'm Monica Ricks.