Inconsistent state regulation is preempted under the federal law. Under the Supremacy Clause, any state law that conflicts with a federal law is preempted. Therefore, the registration provisions of Section 3 were preempted by federal law. The federal government has preempted certain areas of noise regulation. Therefore, Section 5 was also preempted by federal law. Local governments are preempted from regulating smoking more stringently than the Act. Congress has preempted state regulation in many areas. In other markets, newscasts, local programming or preempted CBS morning programming are aired. Despite this, KRON occasionally preempted NBC programming. But Pat Brown preempted "Confidential"s win by calling for a retrial. Four extra episodes have preempted regular episodes that were previously scheduled. Lower priority tasks can be preempted by higher priority tasks at any time. As a result, "NBC Nightly News" is preempted on weekends. This caused complaints about preempted ABC Sports programming. WCPX also preempted some CBS Sports programs as well.