Immigration policy has been a focal point of Donald Trump’s campaign since he announced he was running for president 14 months ago. Today, amid signs he may be preparing to modify some of his hard-line positions on illegal immigration, here is a review of where Trump supporters stand on the issue:

1 Most Trump supporters view immigration as a “very big problem” in the U.S. In a survey released last week, 66% of registered voters who support Trump in the general election call immigration a “very big problem” in the country. Just 17% of Hillary Clinton backers say the same. Terrorism is the only other issue, among seven included, that is viewed by about as many Trump supporters as a major problem (65%).

2Trump’s proposed border wall gets overwhelming support from his backers. Perhaps no Trump proposal has resonated more strongly with his supporters than his plan to build a wall along the U.S. border with Mexico. Fully 79% of Trump supporters favor building a wall along the entire U.S.-Mexico border; just 18% are opposed. Among Clinton supporters, 88% oppose a border wall, compared with 10% who favor it.

3Trump supporters have mixed views of undocumented immigrants. Just 35% of Trump supporters say undocumented immigrants take jobs U.S. citizens would like to have, and a third say that they are less hard-working and honest than citizens. However, a greater share of Trump supporters (50%) think undocumented immigrants in the U.S. “are more likely than American citizens to commit serious crimes”; 43% say they are not. And among voters who support Trump strongly, 59% associate unauthorized immigrants with serious criminal behavior. Fewer (42%) of those who support him less strongly say the same.

Pro-Clinton voters are far less likely than Trump supporters to express negative views of unauthorized immigrants, and there are only slight differences based on strength of support.

4 During the Republican primaries, most Trump supporters did not favor a national effort to deport all those in the U.S. illegally. In March, Republican and Republican-leaning registered voters who backed Trump for the GOP nomination were split over whether undocumented immigrants should be allowed to stay in the country legally: 52% were opposed to unauthorized immigrants staying in the U.S. legally, while 47% said they should be allowed to stay if they met certain requirements.

At the same time, Trump supporters were less supportive of a path to legal status than were GOP voters who supported other candidates – and far less supportive than Democrats who supported either Clinton or Bernie Sanders for their party’s nomination.

Most Trump supporters who opposed a path to legal status for those in the U.S. illegally supported a national law enforcement effort to deport all unauthorized immigrants. But that constituted fewer than half (42%) of GOP voters who supported Trump for the nomination.

5Today, voters who back a Trump presidency are divided on priorities for U.S. immigration policy. Nearly half (48%) of Trump supporters say the priority for policy to deal with illegal immigration should be stronger law enforcement and better border security. Just 10% say the priority should be creating a way for undocumented immigrants to become citizens if they meet certain requirements. But about four-in-ten (41%) say both of these approaches should be given equal priority.

When Trump voters who give equal priority to both are asked to choose just one, a majority overall comes down on the side of stronger law enforcement and better border security: 78% say this should be the priority, compared with just 19% who prioritize a path to citizenship for those in the U.S. illegally. Among Clinton supporters, opinions are nearly reversed: 80% say a path to citizenship should be the priority, while 19% prioritize tougher law enforcement and better border security.