It's somewhat hard to say because there weren't many Japanese on the East Coast. The largest Japanese communities were all located on the West Coast, as well as in Hawaii and Japanese immigration had been banned by the 1924 immigration act. By 1940, census figures reported 120,000 to 130,000 ethnic Japanese people residing in the U.S. and again, the overwhelming majority were on the West Coast. The particular distribution of Japanese-Americans was a key factor in causing the internment program and help explain why it was so West-centric; only the West Coast and Hawaii communities were large enough to be considered dangerous. As an aside, when the interment began, many college-age Japanese fled to universities and colleges outside the West Coast to avoid being placed in camps, the total number of Nisei Japanese who were in college at the war's end (keep in mind the camps were closed in 1946) totaled around 4,300. Also, all of the permanent camps were located in the West Coast or Midwest, with the Rohwer and Jerome WRA camps being the most westerly. There were, however, temporary detention centers on the East Coast (Ellis Island, for one) and East Coast Japanese were subject to curfew laws.