"A RC site" saying Scott Hahn was "PCA in his early college years" is not the same thing as Scott Hahn himself saying he was ordained in the PCA. Obviously.
“Question and Answer
Presbyterian Church in America
Question:
What distinguishes the OPC from the PCA? More specifically, are there differences in ordination requirements?
Answer:
The OPC and PCA have fraternal relations. The OPC separated from the northern Presbyterian church in 1936 because of theological liberalism. The PCA separated from the southern Presbyterian church in 1973 because of theological liberalism.
The OPC and PCA share the same doctrinal standards (the Westminster Confession of Faith and Larger and Shorter Catechisms). The OPC tends to be more conservative than the PCA, holding to a more “strict subscriptionist” position relative to the Confession and Catechisms. It also tends to be more conservative in its worship.
Ordination requirements in both the OPC and PCA are very similar. OPC ministers have no difficulty transferring into the PCA, and PCA ministers have no difficulty transferring into the OPC. (SP)”
http://www.opc.org/qa.html?question_id=143
I think the concept of election is totally in the eyes of the beholder.
e.g. - Election = I am and you are not because I believe I am and believe you are not.
I have the same attitude toward the Moose or Woodsmen.