A White House Cabinet secretary under former President Barack Obama Barack Hussein ObamaMomentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina Majority of voters say Trump should not nominate a Supreme Court justice: poll MORE took an implicit swipe at Trump administration officials on Friday, saying he didn't know of anyone in the Obama White House that needed to hire a lawyer.

"I served 4 years in the Obama White House. I never hired a lawyer, and I don't know anyone who did," Chris Lu, who also served as a deputy secretary of Labor under Obama, wrote on Twitter. "Just thought I'd point that out."

I served 4 years in the Obama White House. I never hired a lawyer, and I don't know anyone who did.



Just thought I'd point that out. — Chris Lu (@ChrisLu44) July 14, 2017

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President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE and some senior officials in his administration have hired outside attorneys to help them navigate the shaky legal ground surrounding the special counsel and congressional probes into Russia's meddling in the 2016 presidential election.

In May, Trump hired attorney Marc Kasowitz to head the team of outside lawyers helping him with the Russia probes. Also on that team is Jay Sekulow, an attorney well-known for his work defending Christian conservative causes who has defended Trump on television.

More recently, Trump's eldest son Donald Trump Jr. hired a lawyer to represent him after it was revealed that he met last year with a Russian attorney who was presented as having damaging information about his father's Democratic opponent Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE.