A letter has been written to the U. S. Army Corps of Engineers in which all 16 US senators have urged a quick action to stop the movement of Asian carp. The letter has demanded quick action to stop the invasive fish from entering the Chicago Sanitary and Ship Canal into the lakes.

The decision to send a letter came a day after Asian carp DNA was detected in Lake Michigan waters off Wisconsin, the Milwaukee Journal Sentinel, for the first time.

The Army corps has been studying the problem of invasive carp that are known to have made their way to the world's largest freshwater system several years ago. A plan is now scheduled to block the fish in January.

According to the Journal Sentinel, the senators wrote in the letter that a set of alternatives will be provided by the report, but it does not provide any recommendation about which alternative would be the best in preventive species, like Asian carp.

The Journal Sentinel said, "It is our expectation that the Corps will work with Congress, our staff, and regional stakeholders before and after the report is issued so that we can expeditiously determine how to best move forward with the plan".