U.S. Rep. Betty McCollum's defense work has drawn criticism from peace groups, who view it as a betrayal. Her GOP rival has also spoken out against her, referring to it as "the swamp".

Supporters of McCollum argue that her advocacy is necessary to protect Minnesota's interests. They claim that without her efforts, other states would likely benefit at Minnesota's expense.

Further details on the controversy surrounding McCollum's defense work are available from the source. The criticism and support for McCollum's actions highlight a complex issue with different perspectives.