If you voted for Lantos then you must live near me. He was my Congressman before he retired in 2008. Lantos was one of the most progressive members of Congress in spite of voting in favor of the war. I strongly disagreed with him on the war, but agreed with most of his other positions. I tend not to use single issues as a litmus test. Lantos also became a staunch critic of the war in later years. And if you look at his foreign policy positions, he was a strong supporter of human rights. On the whole, I think he was a good Congressman.
So far as why Clinton voted for the war, there are two theories. One is proposed by her biographer, Carl Bernstein, who says her work ethic failed her in this case. She didn't delve deeply enough into the voluminous intel she had access to, or she would have known that there was doubt about WMD's which the Bush admin was concealing. The other theory - my theory - is that she voted for the war because it was polling well at the time and she knew her vote wasn't needed to pass it. The reason I support this theory is that it's consistent with a weakness with both of the Clinton, that they have a tendency to compromise their positions for what they perceive as political advantage. In this case, it was the worst political move of Clinton's career, almost certainly costing her the primary in 2008, and since she would have defeated McCain, the presidency as well. The whole truth might be some combination of these two theories. I haven't the slightest idea why her representing the State of New York would have had anything to do with it. Do you?
I thought it was rather jarring that you singled out these three among the hundreds voting for the war as traitors. It's an age old anti-semitic stereotype that Jews are disloyal to their home countries. Before Israel, it was an international Jewish conspiracy that they were said to be loyal to. Later, it was Israel. I think a lot of people on the left have an unhealthy obsession with Israel. Israel supported the war. There is zero evidence that anyone in our government favored the war because Israel supported it.
While I'm unimpressed with the argument that supporting Sanders automatically makes you not anti-semitic, I'll take your word on it. I'm not going to assume you're anti-semitic based on one post. My reply was more a curiosity as to why you singled those three out. I'll accept your explanation.