Federal and state responsibilities
Arizona v. United States addresses federal preemption of particular state immigration measures. It does not make every state or local rule invalid. Assess the specific rule and later authority; residence alone does not establish immigration status.
Finding the responsible office
Use USCIS instructions or your EOIR notice rather than assuming that a court exists in every state or that the nearest office handles your case. This geographic reference does not certify local facilities, services or state-law developments.
Russian speakers in Delaware
The Census Bureau's American Community Survey for 2020–2024 estimates that 1,492 people age 5 and over speak Russian at home in Delaware (± 387), 0.1% of the U.S. total of 1,020,261. 368 of them (24.7%) speak English less than “very well”, against 41.4% nationally. 836 residents were born in Russia, 477 in Ukraine and 122 in Belarus. These are survey estimates for population groups and say nothing about any person's immigration status.