In Star Wars, we see the main characters more or less traveling freely between various planets. Characters that are wanted by a faction (e.g. the Empire, Confederacy, etc.) do face challenges sneaking around and through blockades (and such form major plot points), but there doesn't seem to be an indication that worlds are regularly or permanently blockaded "just because" during times of relative peace. It seems that if you can physically get to a place in one piece and aren't specifically on anyone's radar, you will generally be left alone to do whatever you want.
Does the Star Wars universe have a concept of immigration restrictions? For example, if a Jawa from Tatooine wanted to travel to Mustafar for whatever reason (to find local employment, sell droids, attend school, escape overprotective parents, sightsee, perform a religious pilgrimage, whatever), would they have to meet any specific official requirements (e.g. carry a passport issued by a government authority, apply for a visa, be formally interviewed by local authorities at a booth, satisfy a criminal background check, pay a migration fee, pass a literacy test, undergo a screening for infectious diseases, etc.) or would they be able to travel as long as they had access to a ship and did not encounter any specific trouble from faction authorities (e.g. neither planet currently blockaded, no arrest warrant out on the individual, no chance encounter with scurvy space pirates, arr)?
Jar Jar Binks's banishment from Gungan society seems like it could count, but that's more a case of exile - he was kicked out of his homeland rather than restricted from traveling to or settling in a new one - there's no indication that anyone tried to prevent him from living among the Human population of Naboo or later traveling to Tatooine or Coruscant, nor is there any indication that any government officials on either of those worlds would have particularly objected to his presence (or sought to have him deported) if they had been specifically made aware of it.
In other words:
- Do we not see immigration checks because they are just not done in the Star Wars universe?
- Is it implied that immigration checks are done off-screen, and we are just not shown them in order to prevent the movies from being ten hours long (Episode VII, Part F, Rey is still waiting in line to be interviewed by the Takodana Immigration Authority, and feeling tempted to punch the Gungan five meters closer to the desk)?
- Are immigration checks actually required by most or all planets, but the main characters are just so badass that they dodge them for the street cred (maybe that's why Amidala landed in the middle of the desert, because she forgot her passport and didn't want to be detained by Tatooine ICE (or perhaps SAND would be a better term, maybe Strategic Action for Noncompliance Department))?