Donald Trump on Tuesday defended a statement he made Monday in which he said all Muslims should be blocked from entering the United States temporarily until the government can "figure out what is going on."

"We have no choice but to do this," Trump said on ABC's Good Morning America Tuesday. "We have people that want to blow up our buildings, our cities. We have to figure out what's going on."

His comment incited outrage from U.S. presidential candidates, the White House, and the international community. White House spokesman Josh Earnest said Tuesday Trump's statement should disqualify him from the presidential race, and it could be a security threat. Several Republican politicians have come out against Trump‘s proposal, including Dick Cheney, Paul Ryan, and Mitt Romney.

There are around 1.8 million Muslims in America. We broke them down by some estimates.

Approximately 0.9 percent of American adults identified as Muslim in 2014, according to Pew Research Center Religious Landscape Survey. Pew said the numbers produced by the landscape study might have been low estimates due to the fact that the survey was conducted only in English and Spanish.

Americans are likely to overestimate the Muslim population in the country, a study by the research group Ipsos MORI said. U.S. respondents estimated the Muslim population in America was 15 times greater than it actually was, according to the global survey conducted in August 2014.

While that might seem like a small sliver of growth, it actually means the number of American Muslims doubled in seven years, according to Pew surveys from 2007 and 2014. And based on Pew's projections, the number of Muslims will surpass the number of Jews in the U.S to make up 2.1 percent of the country's population by 2050.

Muslims worldwide are as concerned with Islamic extremism as Western nations, according to a 2011 Pew study. Further, slightly less than half of American Muslims believe their leaders have done enough to curb extremism.

Only 38 percent of Americans said they knew a Muslim personally, according to a Pew 2014 survey. The survey also found Americans related most coldly to Muslims out of any religion. When asked to rate Muslims on a "feeling thermometer" from 0 to 100, with 100 as the warmest, the average rating among people who knew a Muslim personally was 49. The average score for people who did not was 35.

This article originally appeared at Vocativ.com: Most Americans don't have Muslim friends