Harvard Professor George Jesus Borjas, the foremost scholar on the economic impacts of immigration. There is a wealth of material here found on his page. Professor Borjas is a supporter of immigration restriction:
https://www.hks.harvard.edu/fs/gborjas/
Here is a link to his blog entry of September 27, which is also accessible as a tab on the webpage above, where Professor Borjas notes that other celebrated Harvard academics such as Charles Murray and Larry Summers, previously pro-immigration, have recently acknowledged the damage done to citizen workers by mass immigration:
https://gborjas.org/
Here is a recent article Professor Borjas published recently in the general media on the subject of the benefits of immigration going to the upper classes while the costs are borne by the working class:
http://www.politico.com/magazine/story/2016/09/trump-clinton-immigration-economy-unemployment-jobs-214216
Latinos for Trump. The site includes, among other things, good material on the hardships on Latino citizens caused by continued mass immigration:
http://officiallatinos4trump.com/
For those who worry about Trump being out of control as president, here are two excellent articles by Glenn Reynolds, professor of law at University of Tennesee and founder of the blog Instapundit. To paraphrase Professor Reynolds, only with Donald Trump as president will the press, the courts and the federal bureaucracy do their jobs in acting as counterweights to presidential power. With a Clinton presidency those elements will be subservient as they have already demonstrated during the campaign, and presidential power will be truly unchecked:
http://www.usatoday.com/story/opinion/2016/09/08/hillary-foundation-clinton-email-fbi-classified-doj-democrat-bias-trump-glenn-reynolds/89929744/
http://www.usatoday.com/story/opinion/2016/05/26/donald-trump-imperial-presidency-obama-executive-action-order-power-column/84907556/
For those conservatives who have qualms about supporting Trump, two excellent articles by a scholar at the Claremont Institute using the pseudonym “Publius Decius Mus”:
http://www.claremont.org/crb/basicpage/the-flight-93-election/
http://www.claremont.org/crb/basicpage/restatement-on-flight-93/