He was. Deported more than any president in the 21st century apparently, despite more friendly rhetoric towards migrants and all that human rights talk. Circa 3 million. BUT he may have been slightly less heavy-handed than Trump, whose dawn-raid tactics have drawn ire and more protests than Obama got.
I agree it's pretty hypocritical though.
Obama also promised to close Guantanamo. He did reduce the number of detainees quite a bit, actually, but didn't succeed in closing the facility due to opposition from Congress, apparently. You could maybe argue his hands were tied, but innocent people still died under his watch.
Obama was president when a few serious attacks on civilians took place, like:
https://en.wikipedia.org/wiki/Granai_airstrike
https://en.wikipedia.org/wiki/Kunduz_hospital_airstrike
Democrats. Republicans. Same difference. I mean, if I was an Afghan villager, would it really make a difference to me who is president when my wedding party gets bombed to shit and I lose half my family in the most unimaginable way? Obama did apologize for some of them. How nice. If Iran bombed a US wedding party or hospital in Texas and killed dozens of innocent civilians on the happiest day of their life, and then issued an apology, would we just accept that? You wonder why so many people have animosity towards the US?
Anyway, Trump claimed to be anti-war, but now he's trigger-happy as anything and making not-so-veiled threats to assassinate Ayatollah Khamenei. Not a lawyer, but pretty sure that's still illegal in international law... Aside from being chilling, tacky, and arguably deeply moral, how many other countries make it a policy to just wipe out top commanders of countries they're in conflict with? Let alone scientists? And their families and kids? That's the kind of thing you expect from corrupt "third-world" dictators, not from leaders of the free world, isn't it? Stay classy.
Imagine if every country operated that way and just assassinated top military officials or politicians (and often, the wife and kids too). Taking out a terrorist is one thing. Blowing their wives and children to shit in their sleep is another. Are their kids worthy of a brutal death by association? Isn't that something for the courts to decide? Pretty sure that goes against quite a few international laws. Even wars have laws. Shall we just blow up Netanyahu next time he goes shopping and kill his family too?
This is the stuff of barbarism and not a civilized country.