The Fourteenth Amendment has been a long-term disaster for the country.
It should be repealed, with one or more new amendment(s) passed to replace it.
At the very least, the "birthright citizenship" provision needs to be excised, and replaced with language to the effect that to be considered a "citizen of the United States" one must be born of two parents who already -are- "citizens of the United States" (can be either naturalized or "natural born", keep reading).
Also, the re-written amendment should clarify and define what "natural born citizen" is, insofar as it is used in the Constitution.
I believe that "natural born citizen" should be defined as being born to two citizens of the United States within the borders of the United States (note again that the "citizens" can be naturalized citizens, but that the birth must occur -in- the United States), or in other circumstances as legislated by the Congress. An example of an "other circumstance" might include an American couple in foreign service who has a child overseas, and registers the birth promptly. But most importantly, the ambiguity regarding the words "natural born" will be removed, replaced by an irrefutable definition. This was an oversight of The Founders at the Constitutional Convention -- it's time to nail it down.
This will NEVER come "from the Congress".
It MUST come from an Article V Convention of the States.