Minor point, but it's an important one: the students these issues affect aren't foreign exchange students, they're international students. Difference being that international students complete their entire degree program in the country, and exchange students are usually only here for one semester or up to one year. International students are far more vulnerable in terms of violations of their rights as tenants, workers, etc because of their greater dependency on income earned while here, and because they generally come from much poorer countries.