The title says all. To learn more, please visit USCIS.GOV https://www.uscis.gov/news/news-releases/putting-american-workers-first-uscis-announces-further-measures-detect-h-1b-visa-fraud-and-abuse

WASHINGTON – U.S. Citizenship and Immigration Services (USCIS) today announced multiple measures to further deter and detect H-1B visa fraud and abuse. The H-1B visa program should help U.S. companies recruit highly-skilled foreign nationals when there is a shortage of qualified workers in the country. Yet, too many American workers who are as qualified, willing, and deserving to work in these fields have been ignored or unfairly disadvantaged. Protecting American workers by combating fraud in our employment-based immigration programs is a priority for USCIS.

Employers who abuse the H-1B visa program negatively affect U.S. workers, decreasing wages and job opportunities as they import more foreign workers. To further deter and detect abuse, USCIS has established an email address which will allow individuals (including both American workers and H-1B workers who suspect they or others may be the victim of H-1B fraud or abuse) to submit tips, alleged violations and other relevant information about potential H-1B fraud or abuse. Information submitted to the email address will be used for investigations and referrals to law enforcement agencies for potential prosecution.