The most dangerous way to immigrate to the USA would definitely have to be to immigrate illegally. Children and adults sometimes end up losing their lives in their efforts to reach American soil.
Travel was too dangerous
Ireland
The same reason most people immigrate to the US: to have a better life and escape the bad conditions in their homeland.
New York City
its safer in the us
the most dangerous place is california
Most of them came from Nazi Germany between 1933 and 1939. Those were German Jews.
most of the population of the USA is of European decent, Europeans have been immigrating there since 1492
to get better land
There are various reasons that Britain's citizens might immigrate to the US. For example, they might move there to marry an American they met on the internet.
About 200,000 Arabs migrated to the US
for freedom and a better life