Foreigners have no right to just show up and expect to be admitted, nor do they have the right to just break in or overstay visas.
These people are illegal aliens.
Our laws must be enforced and these people must be returned to their own country.
They are NOT immigrants.
Immigrants are people who apply for, pay for, wait for and comply with the documents that make them immigrants.
In Germany btw every time you move you have report it, even if you just move next door.