Not (exactly) true. There are many good ideas being floated that would allow the ruling to stand, while eliminating the negative consequences. Eghttps://en.m.wikipedia.org/wiki/Citizen_Equality_Act_of_2017

Correct. It would require a Constitutional Amendment. Or it would require a reverse decision by the Supreme Court in a similar case. The later is unlikely to happen for at least another 6 or more years.