Patriotism: devoted love, support, and defense of one's country; national loyalty.
Christianity is literally devotion love and support of God in and through the biblical Jesus Christ.
The very nature and spirit of this nation does not allow us to be biblical Christians first, and then patriotic. The Spirit of God does not allow us to be equally devoted.
For the flesh lusts against the Spirit, and the Spirit against the flesh. And these are contrary to one another; lest whatever you may will, these things you do.
No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.