Final answer:
Immigrants at Ellis Island were subjected to physical and mental tests, questioned by inspectors, and potentially barred from entry if deemed unfit or if they violated contract-labor laws.
Step-by-step explanation:
At Ellis Island, immigrants were subject to a series of procedures upon arrival. This included undergoing quick physical and mental tests to screen for any infectious diseases, particularly an eye disease called trachoma. Immigrants then faced a series of questions from inspectors to assess their eligibility to enter the United States.
This interview process was designed to identify individuals who might become a public charge or who might be seeking entry under a labor contract, which was prohibited by law. Those in steerage, the least expensive accommodations on a ship, were most scrutinized, and if they failed any tests or were deemed unsuitable, they could potentially be deported back to their home countries. Overall, about 2% of immigrants arriving at Ellis Island were denied entry.