I couldn’t find anything that says this is correct.
There was a Supreme Court case in 1898 regarding a Chinese man born in the states to persons who were in the country legally. He was granted citizenship by the USSC ruling. Lower courts upheld the decision to not confer citizenship. Fast forward to the 1960'2. A few Federal agancies and departments decided on their own the 14th amendment was not interpreted correctly so started granting citizen on their own. Trump, being in charge of the Federal bureaucracy can undo this with an executive order. We shall see.