"Looking ahead, I can see more and more instances where I will disagree with the president on very fundamental issues. The largest, for me, is education"

Jim Jeffords is expressing his difference with the president on the problem of education. He thinks that the president's policies on education are basically incorrect which he will continue to disagree with the president on this issue in the future. Jeffords is most likely describing the president's stance on education funding, school choice, and other education policies. He thinks that the president's policies are not in the very best interest of trainees which he will continue to oppose them. Jeffords is likely promoting for increased funding for public education, more equitable access to instructional resources, and other policies that will benefit trainees. He is also most likely promoting for policies that will help close the accomplishment gap in between students of various backgrounds. Jeffords' statement is a strong indicator of his commitment to advocating for academic policies that will benefit all trainees.