50% of people want to redouble security along the southern border... in Mexico:

A poll (link in Spanish) published by the news paper El Universal shows that 50% of interviewed Mexicans are in favor of redoubling the police security in the border with 51% of the Mexicans wanting immigration with Central American citizens to the country to diminish, according to a survey published Monday by the newspaper El Universal. In the USA, 39% think the same in regards to total immigration.
...
According to a poll by Bumeran, in a survery of 3,180 companies, 41% didn’t want to hire foreign workers.  A respondent to the survey said he believed that the reasons for this are protectionism, unjustified nationalism, and not being sure of foreign workers talent..

What would be more interesting is to find out how many of those same people want to immigrate to the United States, legally or illegally... or whether our decision to build a fence is justified in their minds.