I am amused by the controversy surrounding Einsteins nationality, so I propose to beef up the U.S.s Unique Power in a way that may solve the problem: The Power of the Brain Drain: every Great Scientist has a 10% chance to emigrate to the U.S. (e.g., the GS is instantly teleported to a random American location). The check is repeated every turn after the Great Scientist spawns (including the first). So if you dont use him soon he will eventually leave. This may either replace or else be added to the existing unique American power.