Well, I don't agree with the Trump administration policy, but Biden has actually allegedly continued something similar https://www.vera.org/news/children-are-still-being-separated-from-their-families-at-the-border, and Democrats are infamous for using Child Protective Services to separate children from parents for ridiculous reasons like keeping businesses open in defiance of Covid lockdowns. https://www.texaspolicy.com/covid-exposed-government-overreach-and-child-protective-services-also-deserves-scrutiny/