Exactly. If people would learn their American History (if it hasn't been revised right out of the books) Columbus was traveling at the same time as the spanish inquisition, which led to scores of sephardic Jews taking ships to the new world. I am of this heritage myself, on my mothers side. A Taino Jew, because my Jewish ancestors from Spain came to Puerto Rico and married Taino natives.
Many of these sephardi traveled as far as the Rio Grande, and were/are known as crypto-Jews. For hiding their Jewish roots.
But the whole pre-american visits from the tribes of Israel, probably not.....
BTW, the Cherokee nation is one of the most interbreed tribes of the americas. They were almost interbread out of existence, so they were offered land in the SE. Then everyone with a drop of Cherokee was trying to get something. In america being part Cherokee is like being part Irish, or Italian....your bound to find one in 5 (persay) that have the blood.