Final answer:
The probable reason for a carrier's arrest in violation of regulations is that they have violated the regulations, either knowingly or unknowingly, as arrests are based on the legal standard of probable cause.
Step-by-step explanation:
If a carrier is arrested in violation of regulations, the probable reason for this is typically that they have either knowingly or unknowingly violated the regulations. Based on the information provided, an arrest would likely be based on probable cause, which means law enforcement has a reasonable basis to believe a crime has been committed or that evidence of a crime can be found. This is a key legal standard in determining the legality of a search or seizure and applies to obtaining arrest warrants as well. However, police can arrest someone suspected of a felony without a warrant if probable cause exists.
In instances where police demand immigration papers based on reasonable suspicion, or where searches of a vehicle's passenger compartment occur without a warrant, probable cause is a pivotal requirement. It's important to note that critics have raised concerns about laws like Senate Bill 1070 of 2010, which they argue could encourage racial profiling. Violation of such regulations, however, must be substantiated by evidence that establishes probable cause, rather than assumptions based on race or ethnicity.