A conservative watchdog group’s probe into the taxpayer costs of Malia Obama’s spring break trip to Mexico in March is under fire for crossing into an area traditionally considered off-limits: first kids.

Judicial Watch, known for their investigations into first lady Michelle Obama’s sometimes costly foreign travels and vacations, has filed a Freedom of Information Act lawsuit against the U.S. Secret Service for details of Malia Obama’s mid-march trip to Mexico. At the time, news stories said the 14-year-old was accompanied by 25 Secret Service agents.