Ipsos said in a statement: "The biggest over-estimations tend to be in countries with very low levels of immigration, such as Argentina, Brazil, South Africa, India, Mexico and Peru, all of which overstate the proportion of immigrants by over 20 percentage points, but Canada and the USA, countries with higher levels of immigration, are also among the most inaccurate. Saudi Arabia and to a lesser extent Israel are the only countries that underestimate the proportion of immigrants." (Ipsos graphic: Respondents from countries above the line guessed too high on the immigrant population in their country)
more recent Ipsos survey, from last month, 49 percent of Americans said they worry that immigrants have made it more difficult to get jobs. That number is up from 46 percent in October 2015, but down from 60 percent in 2011. Also, 77 percent of Americans believe terrorists are pretending to be refugees who will enter the U.S. to cause violence and destruction.
There are some positives. When asked if they think immigrants play a positive role in society, 35 percent of respondents said yes, up from 18 percent in 2011. Also, 36 percent said immigration is good for the economy, up from 23 percent in 2011.