Immigration is shaping up to be one of the most contentious and emotional topics in the 2016 presidential race. It's also one on which candidates' views aren't yet fully formed.

It turns out that nailing down candidates' stances on immigration is really hard. They change their minds (or, at least, their messaging) fairly often, and they place a lot of conditions on what they want: mandatory E-Verify, but only if the system is revamped to work better. A path to legal status, but only once the border is secure (which raises another question: Does "secure border" mean the same thing to everyone?).

But it's worth it to figure this out. After research and reaching out to campaigns, here's our rundown of where candidates fall on six different immigration policy questions. (We plan to do this for other topics throughout the campaign season, as well. Check out our climate change table here.)

Copyright 2016 NPR. To see more, visit