There’s legal ways to disrupt gov agencies. Lots of filings, request emails, memos with freedom of information act, distribute their plans, say ICE or other obvious weapons of oppression. Know where they’re coming from and how. Put obstacles in their way, busted cars, quick cement barriers, figure out how to flood office buildings, disruption is a valid tool, and it’s not always illegal, some of this would be, probably, but also revolutionary suicide, if you aren’t particularly concerned with your mortal coil lone wolf actions could be effective. Of course there’s also breaking people out of holding areas or concentration camps, disrupting their building process, file demands about possible archeological significance, endangered species, zoning issues start a NIMBY call to action, this can even work on a state level, NV held off yucca mountain being used as a national nuclear waste dump for decades, it can be effective. For strictly non violent resistance organized disruption could be effective anyway. Getting people fake documentation that will slow the process down, getting a bank of lawyers or paralegals calling in detention sites demanding release of specific people file paperwork to that effect, even if it’s just them having to legally respond, it slows everything down. Maybe judges can’t get to the office to do their job by some legal but annoying means.