I agree it's bad, bad for tourism, bad for the economy and bad for the culture exchange. Immigrants overstaying their visa can't really do anything, can't work,

I agree it's bad, bad for tourism, bad for the economy and bad for the culture exchange. Immigrants overstaying their visa can't really do anything, can't work, can't travel, etc. The incentive to stay on a visa is so low, especially for university students who could do much better in their countries than say overstay their visas and work on the black market for a meager pay.