US SB3646

Prohibits federal officials from initiating enforcement actions or claims against individuals or domestic organizations that are substantially motivated by their constitutionally protected political speech, expression, or association

Creates an affirmative defense allowing defendants to challenge government enforcement claims as politically motivated, triggering expedited discovery and requiring the government to prove by clear and convincing evidence that the action was not motivated by protected speech

Authorizes civil lawsuits for injunctive relief and monetary damages against federal officials who engage in political targeting, with abrogation of qualified immunity for officials who did not act in good faith

Requires the Attorney General to submit quarterly reports to Congress on high-profile criminal investigations and prosecutions requiring DOJ headquarters approval, and notify Congress within 3 business days of court orders affecting prosecutorial declarations

Amends the Anti-Deficiency Act (31 U.S.C. 1341) to prohibit the use of federal funds for enforcement actions substantially motivated by protected speech, with a private right of action for aggrieved persons