A former CIA officer who helped investigate Russian election interference denied Director of National Intelligence Tulsi Gabbard’s claim that the Obama administration cooked up intelligence on Russia to undermine Trump’s 2016 election win.

Retired CIA official Susan Miller, an author of the agency’s 2017 intelligence report on Russian election meddling, is vowing to fight any potential criminal charges brought by the Trump administration.

The director of national intelligence called it the “most egregious weaponization and politicization of intelligence in American history.”