Hatch, Lee and Obama all tweet thoughts and prayers for John McCain after brain tumor diagnosis

Sen. John McCain has a been diagnosed with a brain tumor just days after the Arizona senator went under surgery for a blood clot, according to CNN.Mayo Clinic doctors told CNN that McCain has primary glioblastoma, which is a brain tumor that is often associated with a blood clot.It’s also "a particularly aggressive tumor that forms in the tissue of the brain and spinal cord," CNN reported.Last Friday, McCain underwent brain surgery to remove a small blood cut from his left eye. The surgery