A federal judge is weighing whether a lawsuit against the Tax Payers Bill of Rights should move forward. Plaintiffs are suing the state, saying TABOR violates the U.S. constitution because it strips the state legislature of its power to tax. But Colorado is defending TABOR and filed a motion asking the judge to dismiss the lawsuit.
Let's talk more about where Rick Santorum stands and about his rivals, with NPR's national political correspondent Mara Liasson. Good morning.
MARA LIASSON, BYLINE: Good morning, Renee.
MONTAGNE: Now, we just heard from Sonari that Rick Santorum has surged in Michigan, and that would be, of course, Mitt Romney's native state. And that is one that Romney really cannot afford to lose. So what is he doing to stop Santorum, as of today, and what's it looking like?
One of the most talked about personalities on the Republican presidential campaign trail, Callista Gingrich, rarely says a word. That hasn't kept her out of the spotlight, though. From their hair to their home life, potential first ladies get attention on the campaign trail.