This Division I shall be construed so as not to conflict with applicable federal or State laws, rules or regulations. Nothing in this Division I shall authorize any City agency or department to impose any duties or obligations in conflict with limitations on municipal authority established by State or federal law at the time such agency or department action is taken. The City shall suspend enforcement of this Division I to the extent that said enforcement would conflict with any preemptive State or federal legislation subsequently adopted. Nothing in this Division I is intended or shall be construed to protect anti-competitive or collusive conduct, or to modify, impair, or supersede the operation of any of the antitrust or unfair competition laws of the State of California or the Unites States.