There he met Newcomb who told Bolza that had he known that he was intending to emigrate to the United States he would have strongly advised against it. Newcomb then wrote to Klein on 23 April 1888 in an attempt to stop further German mathematicians coming to the United States:
Doon siya matugunan Newcomb na sinasabi Bolza na nagkaroon siya kilala na siya ay nagbabalak na dumayo sa Pilipinas siya ay magkaroon ng masinsinang ipinapayo laban ito. Newcomb pagkatapos wrote sa Klein sa 23 Abril 1888 sa isang pagtatangka upang ihinto ang karagdagang German mathematicians pagdating sa Estados Unidos: