According to Benihana's cautionary note, what legislation could impact Benihana's business?

Further, the U.S. Congress and Department of Homeland Security may implement changes to federal immigration laws, regulations or enforcement programs. Some of these changes may increase our obligations for compliance and oversight, which could subject us to additional costs and make our hiring process more cumbersome or reduce the availability of potential employees. Even if we operate our restaurants in strict compliance with U.S. Immigration and Customs Enforcement and state requirements, some of our employees may not meet federal work eligibility or residency requirements, which could lead to a disruption in our work force. Although we require all of our new employees to provide us with the government-specified documentation evidencing their employment eligibility, some of our employees may, without our knowledge, be unauthorized workers. Unauthorized workers are subject to seizure and deportation and may subject us to fines, penalties or loss of our business license in certain jurisdictions. Additionally, a government audit could result in a disruption to our workforce or adverse publicity that could negatively impact our brand and our use of E-Verify and/or potential for receipt of letters from the Social Security Administration requesting information (commonly referred to as no-match letters) could make it more difficult to recruit and/or retain qualified employees.

Source: Item 22 — CONTRACTS (FDD pages 73–74)