I'll have to dig for it. The rescue act of whatever (the hell it was called) required a social security number (not an ITIN) to get the federal relief stimulus. There were three broad categories of "illegal" aliens that qualified.

The first and second were those here under DACA and TPS (temporary protected status). These are technically aliens temporarily present in the US without status..... But in my book they qualify as 'legal'. Because hey, we have given them documents.

The third category was aliens who had SSNs but no longer had a valid status (I. E. Overstayed their visa or work permit).

This came up due to considerations in my 'day job'.

I'll see if I can find the relevant legislation. But no, not every border jumper got the stimulus. But some who HAD been here legally before but aren't legal now were able to get it.