If what you state is Murtha's take on the subject, then he needs to get better speech writers and update his web page.
The troops are the problem? Come on, you don't believe that.
When he starts talking about the Iraqis not wanting us there, that's pure poppycock. The government is getting a lot of participation and support from the Iraqi citizen. It has asked us to stay. If the citizens didn't want that, the leadership would ask us to start pulling out. They haven't.
If the Iraqis didn't want us there, the re-up figures would be almost non-existant. That's not the case. People are signing up for the third time. Do you seriously think they would do so if they thought the Iraqis hated them being there?
The comment on us killing more Iraqis is not reasoned IMO. Think about it. The terrorists seek to reinstall Saddam's henchmen in power. Do you really think the Iraqis want that? Hell no, the vast majority of Iraqis don't. When terrorists commit car bombings, who is blamed? The US? No way! The terrorists are blamed. Nobody but the brutal killers and their friends want them returned to power. When the US takes out terrorists, Iraqis breathe easier.
There is some truth in the idea that we can't tell them appart. That doesn't mean we should turn Iraq over to the bad guys. Tens of millions of people would be affected negatively if we did.