The Justice Department's National Gang Intelligence Center has not released its findings publicly.
"A rising number of U.S.-based gangs are seemingly intent on developing working relationships" with U.S. and foreign drug-trafficking organizations and other criminal groups to "gain direct access to foreign sources of illicit drugs," the report concludes.
In the last ten years gangs have increased in size and criminal activity. Most gang members live outside of prison walls. There is an estimated 147,000 in U.S. prisons or jails.
The larger cities are being being vacated by the gangs to smaller areas, migrating like immigrant laborers.
Both borders appear to have gang involvement going into the states and throughout Central America and Canada.
One of the gangs that has the eye of the authorities is the MS-13 based out of Salvador. The group is known for extortion, prostitution and other criminal enterprises. It's numbers have grown throughout the United States with about 42 states having some involvement.
Many gang members appear to be illegal immigrants. The 'revolving door' on the border helps keep the numbers growing as arrested members are deported.