Ellis Island, NYTimes Video

Before it closed in 1954, Ellis Island was the gateway to the U.S. for over 12 million immigrants. As President Donald J. Trump's immigration policy continues to dominate the news, we're taking a field trip to learn more about this important part of America's history. Post your questions in the comments for our ranger guide, Doug Treem, and NYT reporter Josie Sedgwick will ask some.