 In April 2007 Iowa State University denied Gonzalez tenure.On June 1, 2007, Gregory Geoffroy, president of Iowa State University, rejected Gonzalez's appeal and upheld the denial of tenure.In making this decision, Geoffroy states that he "specifically considered refereed publications, [Gonzalez's] level of success in attracting research funding and grants, the amount of telescope observing time he had been granted, the number of graduate students he had supervised, and most importantly, the overall evidence of future career promise in the field of astronomy" and that Gonzalez "simply did not show the trajectory of excellence that we expect in a candidate seeking tenure in physics and astronomy – one of our strongest academic programs."