They are apparently looking into whether her father lied on his immigration paperwork when he initially entered the country
Homeland security did the raid as a criminal investigation
And now they have to explain why the violated the longstanding federal policy of not doing stuff like this close to an election when a candidate is involved. If Omar was committing a serious crime now absolutely, like if she had classified documents in her bathroom. But if they are actually looking at what her dad may have done years ago, clearly the timing is totally out of the norm
JD Vance has been saying for awhile he thinks she violated immigration laws but they were trying to find proof.