Do undocumented immigrants have a right to due process?
Yes. Courts have consistently held that anyone on United States soil is protected by the Constitution’s right to due process, even if they illegally entered the country, though people generally have greater legal protections inside the country than at the border.
How much process is deemed to be “due” depends on the situation. Courts
have upheld that people who entered the United States illegally and were ordered deported have a right to appeal those decisions. But the courts have also essentially said that Congress can decide that more limited procedures are sufficient for noncitizens
detained at the border.
Can a new immigrant avoid expedited removal?
Yes, by seeking asylum. When that happens, officers at the United States Citizenship and Immigration Services — not a judge — will review cases to decide whether applicants have a credible fear of persecution back home. If so, they are placed in the immigration court system for a fuller consideration of their request. If officers decided that asylum seekers have no credible fear and should be deported, they still have a right to appeal that denial to an immigration judge, who has seven days to decide.
https://www.nytimes.com/2018/03/04/...ckId=signature-journalism-vi&imp_id=579419403