The Mother Mosque of America was built in 1934, making it the oldest standing mosque in the country. Now a historic landmark, these days it serves primarily as a cultural center and museum.
Texas Sen. Ted Cruz speaks during the 2015 Iowa Faith & Freedom Coalition presidential forum. He's made religion a central tenet of his campaign for the Republican presidential nomination.
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Republican presidential candidates, from left to right, Sen. Marco Rubio, R-Fla., Donald Trump and Sen. Ted Cruz, R-Texas participate in the sixth GOP debate on Jan. 14 in North Charleston, S.C.
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Democratic presidential candidate Hillary Clinton speaks at a rally in Marshalltown, Iowa. Clinton is narrowly ahead of Sanders, but within the margin of error in the final Iowa poll.