Now one of the most powerful people in the U.S. government, Peter Marocco’s turbulent tenure during the first Trump administration sheds light on his current efforts to dismantle the American foreign aid system from the inside out.

In 2018, during Trump’s first term, (Peter) Marocco was a senior political appointee tasked with promoting stability in areas with armed conflict. That summer, he made a two-week trip to the Balkans, visiting several Eastern European countries in what was advertised as an effort to “counter violent extremism” and “strengthen inter-religious dialogue.”

On a 2018 visit to the Balkans, Marocco secretly met with officials whom the American government had determined were off-limits without the highest levels of approval: ethnonationalist Bosnian Serb separatist leaders. Those politicians had been working for years to defy their nation’s constitution and undermine the American-backed peace deal in an effort to promote a Christian Bosnian Serb state. ProPublica pieced the episode together from interviews with seven current and former U.S. officials.

Maureen Cormack, then the American ambassador to Bosnia and Herzegovina, discovered the meeting had taken place and confronted Marocco in the embassy at the end of his visit. Marocco initially demurred, an official said, before finally acknowledging the gathering. Cormack was furious, issuing a sharp rebuke, the official said. Cormack didn’t respond to repeated requests for comment.

Marocco left the country soon after. A year later, he was no longer working at the State Department.

Marocco is now the director for foreign assistance at the State Department and has been delegated the power of deputy administrator of USAID — helping lead the two agencies that previously rejected him. And unlike last time, Marocco is now without strictures and answers to few in the executive branch besides Trump himself.