Even though they’re now considered the fastest-growing religious group in the world, not much is known about Muslims in countries like the United States, where their population is still very small.

According to Pew Research Center’s Factank figures, there are roughly 3.35 million Muslims currently living in the United States, and they make up approximately 1 percent of the U.S. population. A majority of them (58%) are immigrants.

On the other hand, 5.3 million Jews live in the United States, accounting for approximately 2 percent of the U.S. adult population. Judaism is now the second most popular religion in the country — after Christianity — but researchers are predicting that Islam, which is ranked third, will surpass Judaism with more followers in the U.S. by the year 2050.

Pew’s demographic projections estimate that “Muslims will make up 2.1% of the U.S. population by the year 2050, surpassing people who identify as Jewish on the basis of religion as the second-largest faith group in the country (not including people who say they have no religion).”

Concerns are mounting in the wake of the terrorist attack which occurred in New York City on Tuesday. New details are coming to light that show the terrorist was a radicalized Muslim who professed allegiance to ISIS. Investigators discovered 10 to 15 pieces of paper with writing in Arabic, praising the Islamic State of Iraq and Syria.

Sayfullo Habibullaevic Saipov, 29, came to the U.S. in 2010 through a program called the Diversity Immigrant Visa Program.

A 2013 Pew Research Center report estimated that the Muslim share of immigrants granted permanent residency status (green cards) increased from about 5% in 1992 to roughly 10% in 2012, representing about 100,000 immigrants in that year.

“Muslims have more children than members of other religious groups,” Pew reported.

The Washington Times noted: “Muslim women, for example, have an average 2.9 children, compared to 2.2 children from women of all other faith groups. On top of that, Muslim women have children at younger ages than women of other religions, fueling Muslim population growth even further. Between migration and birth rates, Muslims are seeing a significant jump in cultural influence in America.” 

Additionally, the Washington times concluded: “The time has come to recognize that yes, indeed, America is at war with an enemy that doesn’t play by rules of combat, that uses deception and deceit and infiltration by population as regular tools of take-over.”

President Donald Trump, in a tweet on Tuesday, wrote: “We must not allow ISIS to return, or enter, our country after defeating them in the Middle East and elsewhere. Enough!”

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