The ghettos were dismal, overcrowded, segregated jewish areas in cities.

True.  Hitler herded them in these into these areas where they were held there during the Nazi Regime.  Many had died in those areas due to the harsh conditions which they were forced to live in.  Later many Jews were taken to concentration camps where they were to do force labor and their suffering when the Allies arrived in Germany.

Americans agreed to the settlement terms established by the mexican government.