Americans' concern with immigration continues to be heightened, as 23% name it the most important problem facing the country. This is by one percentage point the highest Gallup has ever measured for the issue since it first began recording mentions of immigration in 1993.
The June 3-16 poll was conducted as the U.S. continues to grapple with how to handle a surge of Central American immigrants at the U.S.-Mexican border. Gallup has previously found spikes in mentions of immigration as the most important U.S. problem at other times when the immigration debate intensified, including:
22% in July 2018 amid controversy over a U.S. policy to separate children and parents who were trying to enter the U.S. illegally
17% in July 2014, when a wave of young immigrants from Central American countries crossed the U.S. border illegally
19% in April 2006 as the Senate worked toward passage of a comprehensive immigration reform bill it later passed but ultimately was not considered by the House of Representatives