In 1984 the Port Instituted the 1500 mile Rule because of Over Crowding. In 1984, EWR was so much smaller with No International Service, PE soon Followed with LGW service. in todays World, Repealing the Rule would have minimal effect on EWR or JFK for that matter. The increased service at EWR is a Direct result of the Peoples Express and Piedmont war. PE is still alive today in CO (thanks to Gordon whom got booted by the Good Ole Boys Of USAir) and PI is all but gone thanks to a Sweetheart Deal between CO and U over the LGA Terminal. LGA/037 is correct that the rule started to Build up EWR and ease the over crowding in LGA.