According to the PowerPoint, which of the following is true about illegal immigration to the U.S.? Question 19 options: Politicians agree that only undocumented people who have been convicted of a crime should be deported. Many undocumented people have been in the U.S. for more than 10 years. About 15% of public school students are undocumented. There are about 25 million illegal immigrants in the U.S.