Just to add, even if they obey every law, they can still mess with you a lot.

They can:

• Hold you for 48 Hours withiut any charges
• Confiscate all your belongings (and probably they will try to crack any encryption on devices)
• Put you on a no-fly list
• Conduct targeted surveillance on you
• Send Pegasus malware to your new phone
• Use cell tower triangulation, doesn’t matter if its Graphene OS, it still needs to connect to cell towers if you wanna make calls or use data.
• Randomly send agents to tail you make you feel scared, park in front of your house and constantly monitor your activity.
• In certain scenarios, use thermal imaging to see inside your house (even though some courts have ruled against it), and it would be difficult to even prove they were illegally using thermal imaging, since its passive.

These are all legal and previous administrations could technically already do that, it’s just that they usually weren’t this crazy.