It would not be advisable to bring in refugees. The risks certainly are not outweighed by the benefits of potentially having a more diverse culture. We could experience similar, if not worse events than what has already occurred in Europe.
One major point I would also like to make is that it is the government’s responsibility to keep its citizens safe (in accordance with civil rights). This could entail many things, including economically. Back in the 19th century the U.S enacted the Chinese Exclusion Act to keep out anymore Chinese immigrants from coming in. At the time this bill was enacted, the Chinese made up to 25% of America 's work force. Speaking from historical context, bringing in immigrants can result in your citizens competing with potentially cheaper labour.
One major factor that goes into allowing refugees is how long it takes for refugees to fit into society. Many foreigners coming to America find it difficult to integrate for many reasons. The first reason is that jobs can be hard to come by, and usually it 's jobs with low wages. The second reason is language barriers. Being in a foreign country without a translator is difficult (unless the nation is English speaking). This would be strenuous for refugees as they have to look for jobs, worry about bills, and learning a new language to fit into