Is it safe to have and use an ITIN? Can an irregular immigrant may have ITIN?

The Internal Revenue Service does not share information about ITIN taxpayers with the Bureau of Citizenship and Immigration Services or Immigration and Customs Enforcement (ICE).

TheTax ID (ITIN) is a tax processing number issued by the Internal Revenue Service (IRS) to ensure that people (including unauthorized immigrants) pay taxes. Even if they do not have a Social Security (SSC), and regardless of the status of Immigration, many immigrants have ITINs. People who do not have legitimate status in the United States can obtain an ITIN.