>>No, PCUSA
No. EPC or OPC or RPC. I forget which, but it isn’t the highly conservative PCA and it isn’t the non- confessional and unbiblical PCUSA.
He grew up PCUSA - First in Jamaica http://www.firstchurchjamaica.org/
Which clearly shows up on the PCUSA web site as one of their congregations.
https://www.pcusa.org/congregations/9652/
He currently attends Marble Collegiate Church,
http://www.marblechurch.org/
which is RCA (Reformed Church in America), but never changed his membership.
See, generally
http://www.cnn.com/2015/08/28/politics/donald-trump-church-member/
See also
http://www.theguardian.com/us-news/2016/feb/21/donald-trump-presbyterian-church-immigration
As for you, you need to get your Presbyterians straight. PCA isn’t highly conservative, although that could be said of Westminster Presbytery and scattered other congregations; at best the denomination as a whole is moderate, and so far has been able to encourage the most errant congregations to leave. And the OPC as a whole is more conservative than the PCA, although there are some actions there, as well, which ought to cause concern amongst the members. As for RPC, I’m not sure who you are talking about. RPCNA? ARP? RPCGA? Something else?