When it comes to how Americans view the impact of immigration on U.S. society and life, there’s a big partisan gap – a gap once again reflected in the nation’s politics, particularly in the Republican presidential campaign.

Nearly 59 million immigrants have come to the U.S. since Congress passed the nation’s 1965 Immigration and Nationality Act, which reshaped the face of America. Three-quarters of immigrants in this current wave come from Latin America and Asia. Today, there are 45 million immigrants in the U.S. who make up a near-record 14% of the U.S. population, including an estimated 11.3 unauthorized immigrants.

Overall, Americans have mixed views about the impact immigrants have had on American society, with 45% saying they are making society better in the long run and 37% saying they are making it worse, according to a Pew Research Center survey conducted in March and April.

But the partisan divide on this question is more pronounced. About half of Republicans (53%) say immigrants coming to the U.S. make society worse in the long run, compared with just 24% of Democrats.

On specific issues, the survey also found:

Crime: Among Republicans, 71% say immigrants in the U.S. are making crime worse, compared with just 34% of Democrats, according to the newly released survey. Meanwhile, Republicans are just half as likely as Democrats (24% vs. 55%) to say immigrants are not having much effect on crime.

Among Republicans, 71% say immigrants in the U.S. are making crime worse, compared with just 34% of Democrats, according to the newly released survey. Meanwhile, Republicans are just half as likely as Democrats (24% vs. 55%) to say immigrants are not having much effect on crime. Economy: There are similar partisan differences in opinions about the impact immigrants are having on the economy – 71% of Republicans say immigrants are making the economy worse, compared with 34% of Democrats who say the same. Looked at another way, Republicans are far less likely than Democrats (12% vs. 38%) to say immigrants are making the economy better. (A sizable share of Democrats, 24%, say immigrants are not having much of an effect on the economy.)

There are similar partisan differences in opinions about the impact immigrants are having on the economy – 71% of Republicans say immigrants are making the economy worse, compared with 34% of Democrats who say the same. Looked at another way, Republicans are far less likely than Democrats (12% vs. 38%) to say immigrants are making the economy better. (A sizable share of Democrats, 24%, say immigrants are not having much of an effect on the economy.) Becoming part of society: The view that immigrants generally don’t want to assimilate is particularly widespread among Republicans; 81% say immigrants in our country today generally want to hold on to the customs and way of life of their home country, compared with 66% of independents and 55% of Democrats who say the same. Some three-quarters of Republicans (74%) say immigrants do not learn English in a reasonable amount of time, compared with 45% of Democrats.

The view that immigrants generally don’t want to assimilate is particularly widespread among Republicans; 81% say immigrants in our country today generally want to hold on to the customs and way of life of their home country, compared with 66% of independents and 55% of Democrats who say the same. Some three-quarters of Republicans (74%) say immigrants do not learn English in a reasonable amount of time, compared with 45% of Democrats. Views of immigrants by region of origin: Americans on both sides of the partisan line have mostly positive or neutral views of Asian and European immigrants. But when it comes to those from Latin America, 58% of Republicans say these immigrants have had a mostly negative impact on society, compared with 23% of Democrats. There is a similar divide on views of Middle Eastern immigrants, with Republicans more than twice as likely as Democrats to view them negatively.

Americans on both sides of the partisan line have mostly positive or neutral views of Asian and European immigrants. But when it comes to those from Latin America, 58% of Republicans say these immigrants have had a mostly negative impact on society, compared with 23% of Democrats. There is a similar divide on views of Middle Eastern immigrants, with Republicans more than twice as likely as Democrats to view them negatively. How much immigration: Views also differ along partisan lines on how many immigrants should be allowed to enter the U.S. Two-thirds (67%) of Republicans say immigration to the U.S. should be decreased, compared with one-third (33%) of Democrats. Among Republicans, just 7% say immigration should be increased, compared with 20% of Democrats. Democrats are much more likely than Republicans (43% vs. 25%) to say immigration should be kept at present levels. Overall, about half of Americans (49%) say immigration should be decreased. (A Pew Research survey conducted in May found 31% of Americans said that legal immigration should be decreased, though partisan differences remained similar to our March-April poll.)

Despite these divides, Republicans and Democrats do agree on this point: The U.S. immigration system is broken. Strong majorities of Republicans (89%) and Democrats (79%) say the immigration system needs major changes or needs to be completely rebuilt. Just 10% of Republicans and 20% of Democrats say the system works well and only needs minor changes.