Unauthorized Employees or Agents. Employment of unauthorized aliens by firm is considered a violation of Section 274A(e) of the Immigration and Nationality Act. If selected firm knowingly employs unauthorized aliens, such action shall be cause for unilateral cancellation of this agreement and the City may recover damages from selected firm resulting from such cancellation. The selected firm shall be responsible for including this provision in any context with, and requiring compliance by any/all subcontracts performing for selected firm relating to this agreement.