He died in prison in 1951 for his support of the fascistic invasion of the Soviet Union and antisemitic legislation activity[1] as part of the Axis alliance in World War II.

He wrote about Hungarian towns during the Árpád era, social classes, the first state tax and about the Magyar tribes who migrated to the Carpathian Basin.

In the government, he was a vocal proponent of anti-Jewish actions, and sponsored a law to revoke the status of Hungarian Jewish groups.

"He remained opposed to national socialism and did not take an oath of allegiance to Arrow Cross leader Ferenc Szálasi despite his anti-Semitic views.

During the brief period of German rule and that of their allies in the Arrow Cross, Hóman co-signed a document with other legislators that called for the expulsion of Hungary's Jews; over a half million were quickly sent to Nazi death camps, including Auschwitz, where most perished.

In 1946, the People's Tribunal sentenced Hóman to life imprisonment on war crimes charges, chiefly connected to his vote in the legislature in favor of Hungary's role in the Nazi Germany-led invasion of the USSR.

On 6 March 2015 Hóman was rehabilitated after a ruling by the Metropolitan Court of Budapest, which found that the original trial had inadequate evidence.