Well... Mr. Perez was Obama’s Secretary of Labor.

Via The Daily Beast:

Immigration
attorneys are criticizing the newly minted head of the Democratic National Committee for recent attacks on the Trump administration over a deportation, arguing he was silent on the issue during Obama’s presidency.

Tom Perez, the new DNC chair who was Obama’s labor secretary from 2013 to 2017, ripped into Trump on April 20 over a USA Today report about the deportation of a man who reportedly should have been shielded from deportation by the Deferred Action for Childhood Arrivals (DACA) program. But immigration lawyers who spoke to The Daily Beast said the deportation at issue probably would have played out the same way if Barack Obama were president—and that Democratic political operatives, including Perez, were silent when DACA recipients were deported under his administration.

What exactly was going on during the Obama Administration? And let's not engage in revisionist history:

[Obama] acknowledged that his Administration was, in fact, arresting and deporting these young people and shockingly told a high school honors student facing deportation that if she had a problem with it, she could call her Congressman. This was an opportunity for leadership, not a time to play hot potato.

Obama was also deporting actual United States citizens. Over 4,000 of them in 2010 alone. And don't forget about jailing children in deportation internment camps. I wonder what Mr. Perez thought of that?

But it is comforting to know that Mr. Perez is suddenly outraged by deportations now that a Republican is in control of the deportation apparatus.