Agents enter dual agency when they represent both the seller and the buyer. Dual agency can happen even if the there are two agents involved -- a listing agent and a buyer's agent -- if both agents work for the same broker. That's because it is the real estate broker who creates agency.
The notion of Jewish control of the United States is utter nonsense. Jews are a capable people who have, through hard-work, gained a disproportionate role in some aspects of American life. But they in no way dominate the country.
When FDR got the hand off, he pulled his ears in and ran like hell. The same Communist Jews working with Hoover later went on to work with FDR, but that's not to say that FDR didn't pick up his own Jew friends. Roosevelt opened the offices of the government as never before to Jews.