Primary Risk: Immigrant Intent & Unauthorized Employment
Officers look for evidence you plan to stay permanently (violating 214b) or are working off-campus without authorization.
Example Trigger
"A tweet saying 'Never leaving this country!' or 'I hate my home country.'"
Innocent but Fatal
Selling art on Etsy, asking 'How do I drive Uber on F1?' on Reddit, or posting about 'paid internships' before your CPT is actually approved. Even 'selling notes' for cash can be flagged.