Utility of WARN notices

In times like these, what do you think of the Worker Adjustment and Retraining Notification Act, commonly called the WARN Act or WARN notices?

The federal law was passed in 1988 to give employees 60 days’ notice of an impending layoff, and now it’s getting a workout as companies unload busloads of people.

Broadly speaking, the law applies to companies with at least 100 employees that plan to lay off at least 50 employees at a particular site. Both hourly and salaried workers are covered.

Is the law burdensome to employers? Should employers be required to give even longer notices?