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.
Following the spread of the Inquisition to the New World, the first Jews in the United States came from Portuguese-ruled Brazil. In 1654, twenty-three adult Spanish-Portuguese (Sephardic) Jews arrived in New Amsterdam. The environment they found there was scarcely hospitable. In 1655, more Jews arrived from Holland.