The alliance, chaired by former Senator Alfonse D'Amato, a New York Republican, says it plans to spend that much on lobbying in this session of Congress.
The group gets its money from the Interactive Gaming Council, a Vancouver, British Columbia-based trade association for online casinos, as well as from its poker player members.
The alliance is up against some tough competition. The National Football League says gambling threatens the integrity of its games and has made preserving the Internet ban a priority in Washington.
Last year, the league hired a full-time lobbyist and started a political action committee to make campaign donations.