Packer is reformed and believes in the five points of Calvinism. Can someone with those views be a catholic? Not trying bicker I am just curious.
You wrote:
“Can someone with those views be a catholic?”
No, a Protestant cannot be “catholic”. If he becomes catholic, he will be Catholic.
It happens:
http://www.catholicworldreport.com/Item/2449/from_calvinist_prosecutor_to_catholic_apologist.aspx
http://www.freerepublic.com/focus/religion/1910723/posts?page=2
http://chnetwork.org/2013/07/from-calvin-to-catholicism-conversion-story-of-brian-besong/
Calvin can even lead people to the Catholic Church: http://www.calledtocommunion.com/2010/06/how-john-calvin-made-me-a-catholic/