Political blog

An Obama administration adviser says a decision could come within days on whether to temporarily close a shipping lock in a bid to stop the Asian carp from reaching Lake Michigan.

The goal is to ensure the voracious carp don’t get into Lake Michigan and devastate the $7 billion-a-year Great Lakes fishing industry.

Cameron Davis is the Great Lakes adviser to the U.S. Environmental Protection Agency. He tells The Associated Press on Friday that discussions are under way about closing the O’Brien Lock while crews poison part of the Chicago Sanitary and Ship Canal.

On Thursday, officials said they’d found one Asian carp during a fish-kill operation on another part of the canal. DNA tests have indicated the fish might be even closer to the lock.