No Bush was, and some would argue it was Reagan. Trump is not a Republican.
Ahem… actually to be accurate we can say that Reagan was the LAST CONSERVATIVE PRESIDENT, and the final one this country will ever see in the mold of the Founders.
The Republican Party is not Republican as formerly defined by it's membership.
The GOP was NEVER a Conservative party to begin with. It's simply where the majority that identified as Conservatives went, assuming that party upheld their principles.
Those principles are toast in that party and their leadership has vociferously told principled Constitutionalists and Christians to GET OUT or sit down and shut up and just vote.
Today it is self-evident to anyone honest with facts, that the Republican Party is simply the less radical arm of the Democrat party. Two sides of the same big government coin - with the GOP thinking they can manage big Statism better than the Left.
There is no Party that has become a home for Conservatives yet. But now is the time to coalesce around one and begin the work of establishing out principles within it.