Should illigal aliens be excluded from ADP/ACP testing?

[Guest GRobert]

Many US companies have illegal aliens working, but their illegal status is not known to the employer for quite some time. These workers become "eligible" to participate in the plan because of age and service, but choose to not participate in the plan, for obvious reasons. When the employer discovers their illigal status, these employees are terminated. Should these illegal aliens be excluded from the ADP/ACP testing?