I'm not sure about how much worse things were. But I saw a source from NBC that says it was not practiced under the Obama administration although they very briefly considered it.[1]

This was a quote I thought relevant, however because I don't think it was rainbows and unicorns under Obama either:

"The Obama administration did detain families together — some indefinitely — in hopes of deterring future migrants back in 2014, earning protests and public outrage at the time." [1]

[1]https://www.nbcnews.com/storyline/immigration-border-crisis/...