Trump was quite unambiguous about his plans to weaken the US dollar. In fact, he already sent the dollar spiraling down a little when he told in his WSJ interview last Friday that the dollar had been "too strong". I don't know how that can be possibly misconstrued toward "a much stronger dollar". If Trump is actually going to "make America great again", he should first make American goods competitive in the world markets, but the only American good that was competitive as of late was the American dollar itself
It is not up to Trump though, is it. The Federal Reserve is independent and reports to Congress not the President. Nothing is going to stop them from raising interest rates - if anyone questions them they will use the magic words "we see inflation building" and Congress will roll over and let them raise interest rates.
If American interest rates rise but rates in the rest of the world don't, then the dollar will strengthen.