Why don't you look at the intent of the author of the amendment.
To ensure former slaves have the liberties granted from the bill of rights.
Doesn't really change anything though, the clause is written in a fairly concrete manner. If you are born here, you are a citizen. Trump doesn't get to change that and reflecting on the slave rationale doesn't modify the amendment. If the author wanted it to only apply to slaves or blacks, they would've specified that in the clause. My own opinion is that they wrote it how they did because they lived at a time when the country was still fairly new and existed because of immigration - and likely most of them were grandchildren or great grandchildren of immigrants.
I also think that just because we're an established country and doing well for ourselves doesn't mean we need to be vehemently anti-immigration. We don't need open borders and we should continue to scrutinize foreigners thoroughly, but the system needs revamping and there's extremist who are outrageously opposed to immigration that need to take it down a notch. Some of the best contributors to our country and it's innovation and technology were from immigrants.
Wernher Von Braun, Albert Einstein, Andrew Carnegie, Nikola Tesla, Sergey Brin (Google), Steve Chen & Jawed Karim (YouTube), even Ayn Rand and Rupert Murdoch immigrated here.
Just think what we could be missing out on, or how things could've been, had the United States favored a more anti-immigration stance.
On that note and in conclusion it's good that we have people who have reservations about immigrants because without them, we may be too lenient on who gets in. And it's good that we have people who are open to immigrants because they have made major contributions to our country.