Investigators are analyzing and trying to determine the authenticity of a possible ransom note as the search continues for Nancy Guthrie, the mother of "Today" show host Savannah Guthrie. CBS News' Andres Gutierrez and Anna Schecter have more.
The last remaining nuclear treaty between the U.S. and Russia is set to expire Thursday, ending decades of arms control between the two countries with the largest nuclear arsenals.
Since federal immigration agents fatally shot a man in Minnesota, the state's top corrections official told CBS News there have been "conversations" with the federal government
