His point might have been that some pitchers prefer pitching in the NL b/c they actually want to hit. Yes, I know;I sincerely doubt there are many MLB pitchers that are going to turn down better deals to pitch in the AL, regardless of what they prefer. Guys that go out of their way to actually do that over the course of their careers are likely very scattered outliers. So, no, it's not likely going to be a union issue because of "NL pitchers."