Muslims were in the Americas even before Columbus and here is a great lecture by brother Jerald Dirks who was once a Christian minister who received his theological education from Harvard university.
http://www.youtube.com/watch?v=dcyOUIO31tU
It is a total of 5 videos about 10 minutes each, enjoy it inshaAllah
http://www.youtube.com/watch?v=dcyOUIO31tU
It is a total of 5 videos about 10 minutes each, enjoy it inshaAllah