What is the fine-grained topic of the following text: Ironically, despite the efforts of senators like Boxer, Russ Feingold, Patty Murray and others who have signed such letters to undermine President Obama’s peace efforts in the Middle East, liberal groups like Democracy for America and MoveOn have recently been praising Boxer, Feingold, Murray, and other signatories as “progressive heroes” deserving support for their re-election. Only return the topic.
Criticisms and support for senators undermining President Obama's Middle East peace efforts