[TheDandyMan]

Arrest someone for being on their own property and the seize said property?

Calm down there Che.

[Manuel OKelley]

Thank you.

[Terry L Smith]

Under current thinking, they are ‘visitors’, not years long residents. Therefore, yes, they could bring the crap with them to a small insulated area, and fuck it up for everybody else.
That would make them a threat to society, etc.