Riley McCabe

4 weeks ago | lawfaremedia.org | Daniel Byman |Riley McCabe

The arson attack on Pennsylvania Gov. Josh Shapiro’s residence on April 13 highlights the growing risk of partisan terrorism in the United States. The arson attack, and other attacks in recent years targeting then-presidential candidate Donald Trump, then-Speaker of the House Nancy Pelosi, and other prominent figures show how politicians are at high risk of assassination. The political consequences of these kinds of incidents are profound.

1 month ago | csis.org | Daniel Byman |Alexander Palmer |Riley McCabe |Skyeler Jackson

Terrorism remains a threat to U.S. citizens, assets, and interests despite the national security community’s decreasing focus on counterterrorism. In 2025, domestic terrorism represents a greater threat to the United States than do international terrorist organizations. Most domestic terrorist attacks in the United States are carried out by lone actors or small groups who believe in a wide range of ideologies, such as white supremacy, partisan extremism, and Salafi-jihadism.