President Michael Kotlikoff signed a statement condemning the federal government’s political interference in universities as “endangering American higher education” this week. The letter, published by the American Association of Colleges and Universities, was signed by 238 higher education leaders — including all Ivy League presidents except Dartmouth College.  In the letter, Kotlikoff and other signatories call for “constructive engagement” between higher education institutions and the federal government, urging the government to halt actions threatening academic freedom, research and the security of international students. “We are open to constructive reform and do not oppose legitimate government oversight,” the letter reads. “However, we must oppose undue government intrusion in the lives of…