MADISON, Wis. (AP) – The University of Wisconsin Board of Regents has approved a tuition freeze for all students.  The board approved the proposal at its meeting Thursday.  Originally, tuition was only to be frozen for students from Wisconsin attending the university, as required under the recently enacted state budget. But the regents decided to broaden the freeze to include out-of-state and graduate students as well.  A plan to increase tuition in four graduate programs was dropped.   Regents originally proposed a 2 percent tuition hike in each of the next two years, but the Legislature mandated no increase after news broke that UW had a budget surplus that include nearly $650 million from tuition.