<P> Dog fighting in the United States is an activity in which fights between two game dogs are staged as a form of entertainment and gambling . Such activity has existed since the early 19th century in the United States and was gradually prohibited in all states . It continues as an underground activity in both rural and urban locations . </P> <P> In the late 20th century, police and animal control law enforcement task forces of primarily local and state authorities were formed in many parts of the country to combat dog fighting rings to combat serious animal welfare violations with links to organized crime and social problems . In 2007, the U.S. Congress passed a Federal law against interstate dog fighting activities, providing for felony - level penalties including multi-year prison sentences and large fines for each offense; passage of this law was followed by the involvement of the Inspector General's Office of the U.S. Department of Agriculture in ongoing investigations around the country . </P>

Where is dog fighting legal in the us
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