 Complete the following phrase:  In 1948 he relocated to the United States, taking a position as a Professor of Physics at Syracuse University, roughly equidistant between Buffalo and Albany in Upstate New York. Here he embarked on research in nuclear physics and cosmic radiation. In 1953 he became a member of the New York Academy of Sciences. In the age of McCarthyism, Sitte was the object of official suspicion during his years in the United States, both because of his left-wing politics in the 1930s and because of the contacts he maintained with Czechoslovak communists whom he knew from his time in Buchenwald, and whom he continued to visit even after the 