I accept that the lost tribes went to the New World in the same way I accept the "book of Abraham"
as being legitimate.
Okay, just to clear things up... In case you ever decided to tell someone that a "Mormon" had told you that the people who migrated to the Western Hemisphere from Jerusalem were some of the "lost tribes," that is not the case. I never said anything at all to imply that, and that is not what we believe. A couple of dozen people from two nuclear families (plus one additional man) hardly constitute a lost tribe.
I can trace a vanishingly tiny piece of my Jewish ancestry to the expulsion of the Jews from Portugal.
Some, like the Cohanim line of Jews, can trace their line w.a.y. back to the OT Levites. We find no
such DNA in the New World.
This is an extremely complex topic. I am not a population geneticist and I doubt you are either. So all we can really do is play the "My Expert is Smarter than Your Expert Game." I don't want to do that. It's just a never-ending circle that leads nowhere. I will, however, post a few comments on the subject and leave it at that. Feel free to try to rebut them if you wish, but really have no interest in getting into a lengthy debate on this subject.
As to the matter of Native Americans supposedly carrying no traces of Jewish DNA, there are a number of explanations for this (although only a fraction of them have ever been tested). Here's how one of the reasons was explained to me. The following is an experiment anyone can do to demonstrate
the process by which the Nephites’ generic markers could not only easily have disappeared over time, but how they almost certainly would have done. The concept is known to scientists as "genetic drift."
Put 10 red marbles and 10 blue marbles in a jar. Pick one marble at random and check the color. Let's say it's red. Return the marble to the jar, but also take a marble of the same color from a bottle of spares, and put it in a second jar. The new marble (the one you just put in the second jar) will represent the red lineage. It's the lineage you want to track. Keep repeating this process, picking one random marble each time until the second jar has twenty marbles. (Always return the original marble you picked to the jar you took it from. That jar must always contain 20 marbles.) Of the 20 marbles in the second jar, you might have 8 red ones and 12 blue ones. After you've got 20 marbles in the second jar, start the whole process over again, this time picking marbles from the second jar and adding marbles of the corresponding color from your pile of spares to a third jar. By the time you've got 20 marbles in your third jar, you may have 5 red ones and 15 blue ones. By the time you're working on your fourth or fifth jar, you will likely have only blue marbles. If you have even one red one, though, repeat the process. You are guaranteed to have all blue by the time you get to the sixth or seventh jar. Blue will be fixed and red (the lineage you were trying to trace) will be gone forever. The lineage of the two men and their wives who, with their children, came to the American continent in about 600 B.C. is almost certain to have been lost during the 1600 years since their known descendants were last heard of.
A relatively recent scientific project known as the deCODE Project offers another fascinating example of the problems in tracing specific genealogies. As part of this project, DNA samples of people born in Iceland after 1972 were traced back to the year 1742. It was discovered that the vast majority of the people alive today in Iceland are the descendants of a very small percentage of the people who lived in 1742. 1742 is less than 300 years ago, and yet many, many people living at that time have no genetic lineages represented in Iceland’s population today. This is not to say that they have no descendants in Iceland. It’s just that none of these lineages can be genetically traced.
The question to be argued really isn't, "Are today's Native Americans of Middle-eastern ancestry?" but "Is it possible that a small family from the Middle-east could have settled on the already populatedAmerican continent 2600 years ago and left no genetic evidence of their existence?" Genetic drift, the founder effect and population bottlenecks alone would explain how Lehi's haplogroup would almost certainly have disappeared after just a few generations.
If Lehi and his family had arrived on an empty continent, it would be a different matter entirely, but we know that wasn't the case.
Some Native Americans, though it's impossible to know how many,are descended from a mere handful of women who, with their husbands, settled somewhere on the American continent over two and a half millennia ago. At the time they arrived, the continent was already populated with people who had come across the Bering Strait. Because nuclear DNA changes too quickly from one generation to the next, it cannot be used effectively for population studies. We must instead rely on mtDNA, which is always passed from a mother to her children. Within a few short generations, the haplogroup is likely to disappear entirely. Within 2600 years, to expect to be able to identify it at all is completely unreasonable.
And then you get all sorts of problems with a resurrected Christ continuing to preach to the diaspora
Jews. Or even, why Jesus would want to revert to the OT symbols the NT did away with.
Okay, you lost me at this point. You're going to have to be a lot more specific than you're being in order for me to be able to respond to this criticism.