The German plan for deportation was never executed. There were programs against the Jews, they were persecuted and encouraged to leave, but the Nazis never formally banned them. They ended up going the other direction as genocide approached and made it impossible for Jews to leave.

But the situations are again nothing alike because in that case you're speaking of Germany trying to dump Germans on other countries. In this case you're speaking of the US returning e.g. Salvadorans to El Salvador, which the latter country generally having obligations under international law to accept their citizens. The handful of exceptions, like with Venezuela, have all generally been resolved.