As President Donald Trump continues to implement significant personnel changes and investigations, attorney Abbe Lowell is emerging as a key figure in the legal battles that follow. The 73-year-old white-collar defense attorney has represented a range of high-profile clients from both political parties, including members of Trump’s inner circle and those perceived as his adversaries.

Lowell has been vocal about his long-standing commitment to challenging what he sees as government overreach. "I have basically challenged the overreach of federal agencies in every administration since Ronald Reagan's. It didn't matter whether it was a Democratic or Republican administration. If the government overreaches, then [the] lawyer's job is to put the government in the right place," he stated during a recent appearance on MSNBC.

This week, Lowell has focused on contesting Trump's recent firings, including that of Lisa Cook, a Federal Reserve Governor, and Susan Monarez, the recently appointed CDC director. Cook and her legal team, which includes Lowell, filed a lawsuit challenging her dismissal, labeling it as "unprecedented and illegal." During a hearing on Cook's case, Lowell argued that "allegations of fraud have become the weapon of choice," suggesting that Trump is attempting to gain control of the Federal Reserve to influence interest rates.

In a statement regarding Monarez's ousting, Lowell and other attorneys claimed she was targeted for refusing to endorse what they described as "unscientific, reckless directives" and for not dismissing dedicated health experts.

Reports indicate that Lowell is also in discussions with John Bolton, Trump’s former national security adviser, who has been a frequent target of the president's ire. This comes after the FBI conducted a search of Bolton's home and office, an action Trump claimed he was unaware of.

Three months into Trump's second term, Lowell established his own law firm, Lowell & Associates, aimed at representing individuals he believes have been "unlawfully and inappropriately targeted" by the administration. He has expressed strong criticism of Trump's tactics, stating, "What President Trump and the people who carry out his mandate – it makes George Orwell's '1984' look like a mother goose nursery rhyme. I mean, it is just beyond comprehension."

Lowell's firm has taken on various clients affected by the Trump administration's actions, including New York Attorney General Letitia James. James's civil suit against Trump and his company initially resulted in a $454 million fraud penalty, which was later overturned by an appeals court. In April, she was referred to the Department of Justice over mortgage fraud allegations, which she has denied.

Additionally, Lowell represents Miles Taylor, a former Trump administration official who has publicly criticized the president. Trump labeled Taylor a "traitor" and ordered an investigation into him, accusing him of treason, which Taylor has denied. Lowell is also defending Mark Zaid, the attorney for the whistleblower whose security clearance Trump revoked in March. In a complaint filed two months later, Lowell described this action as "a dangerous, unconstitutional retaliation by the President of the United States against his perceived political enemies."

Despite his recent focus on opposing the Trump administration, Lowell has a history of representing clients across the political spectrum.