From the NYT op-ed page:

The Muslims of Early America

By PETER MANSEAU FEB. 9, 2015

… Vocal anti-Islamic sentiment is undergoing a revival.

… Moreover, there is an inconvenient footnote to the assertion that Islam is anti-American: Muslims arrived here before the founding of the United States — not just a few, but thousands.

They have been largely overlooked because they were not free to practice their faith. They were not free themselves and so they were for the most part unable to leave records of their beliefs. They left just enough to confirm that Islam in America is not an immigrant religion lately making itself known, but a tradition with deep roots here, despite being among the most suppressed in the nation’s history.

In 1528, a Moroccan slave called Estevanico was shipwrecked along with a band of Spanish explorers near the future city of Galveston, Tex. …

The best known Muslim to pass through the port at New Orleans was Abdul-Rahman Ibrahim ibn Sori, a prince in his homeland whose plight drew wide attention. As one newspaper account noted, he had read the Bible and admired its precepts, but added, “His principal objections are that Christians do not follow them.”

… In a sense, Islam is as American as the rodeo.