Since the arrival of the nazi party to power, they kept on enacting discriminatory legislation against the Jews and other human groups that they considered inferior to the 'supreme Aryan race'.
Such laws evolved from the mandatory identification of the Jewish population by wearing a distinctive or placing a sign in their businesses, to forcing them to live in separated and overcrowded city districts called ghettos and finally to the deportation of these people to concentration and extermination camps. <u>This last decision was actually denominated the "Final Solution to the Jewish Question". </u>
The main reason the US Senate rejected the treaty of Versailles was because they feared that US involvement in the League of Nations would mean that American troops would be sent into Europe and settle European disputes.
The First Step should to slow down or stop the issue (Global Warming). However this may not be as effective as intended because this may take a while. None the less, it is still a effective first start. Hope this helped!