The Biden-Harris administration has faced repeated criticism for overlooking or downplaying the threat of Islamist networks in the United States. From student visas and academic institutions to charities and political activism, Muslim Brotherhood-linked figures have spent decades embedding themselves in American society. The result is a sprawling, multi-generational infrastructure that continues to shape campus politics, fund radical groups, and, in some cases, directly support organizations like Hamas. The recent Hamas legal challenge in the United Kingdom to remove itself from the terror list is a stark reminder: ignoring these networks only emboldens them.

Mousa Abu Marzouk’s career illustrates how radical organizations can thrive in democratic settings. Arriving in the United States in 1982 on a student visa, he spent nearly 14 years building influence, raising funds, and networking within Islamist circles. While pursuing graduate studies at Colorado State University and Louisiana’s Columbia State University, Abu Marzouk simultaneously headed Hamas’s political bureau. He even sought recognition from both the Bush and Clinton administrations, revealing the audacity with which he operated.

During this period, Abu Marzouk secured a US green card, raised millions of dollars, and leveraged American institutions to strengthen Hamas’s global infrastructure. By the time he departed the country, he had laid the foundations for networks that would later appear in the infamous Holy Land Foundation (HLF) terrorism financing case.

The HLF, shut down in 2001 after being designated a Specially Designated Terrorist organization, was found guilty of funneling millions of dollars to Hamas. Yet the HLF was merely the tip of the iceberg. Federal investigations revealed a sprawling network of Islamic charities, associations, and personal connections – many tied to figures like Abu Marzouk – that provided not only funds but also legitimacy for Hamas’s global jihadist agenda.

What makes this story even more alarming is that these networks did not disappear after prosecutions and deportations. Instead, they evolved into a generational legacy. Many of the children and associates of those early leaders now occupy positions of influence in American academia, media, and political activism.

Abu Marzouk’s own children continue to reside in the Washington, DC suburbs. Sami Al-Arian, the former South Florida professor convicted of terror-related charges and later deported to Turkey, has children active in journalism and academia – one of whom is a journalist at Al Jazeera English. His son-in-law briefly........

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