Treaty rights
This term is most commonly used in immigration law for the rights of citizens of EEA member States to move freely to work, establish themselves in business or to give and receive services throughout the European Union.
Temporary Admission (TA)
Method of admission given as an alternative to detention while the Immigration Officers are considering whether to allow someone in at a port of entry, or after refusal of entry and before removal. Temporary admission is not leave to be in the UK, it is a temporary status.