U.S. Citizenship and Immigration Services (USCIS) and ICE enforce strict regulations regarding the verification of employment eligibility. Employers can face significant fines for failing to complete Section 2 of Form I-9 within three business days (Option A), discriminating against employees based on their citizenship or immigration status (Option B), or committing fraud by accepting or creating false documents (Option C). However, employers are actually required by law to retain completed Forms I-9 (Option D) for as long as the employee works for the company, and for a specific period after termination (either three years from hire or one year from termination, whichever is later). Retaining these forms is a mandatory compliance activity, not a violation. Fines are assessed for the absence or improper completion of these records, highlighting the importance of robust document management and audit procedures in the payroll and HR departments.