Avalid counterargument to the statement that immigrants cost americans jobs is that

I believe the answer is:   one-fourth of all new businesses are started by immigrants

For example, Google, which arguably the largest tech company in the world today, was co-founded by a russian Immigrant named Sergey Brin.  People in some media like to focus on how immigrants affect the availability of  low-skilled labour because it most likely give the most support from the supporters of a certain political party.

answers.com says temperate reagions

the thirteen colonies are:

connecticut, delaware, georgia, maryland, massachusetts, new jersey, new york, new hampshire, north carolina, pennsylvania, rhode island, south carolina, virginia