I don't get this "conventional wisdom." Nixon ran both times promising to end the war (he had a "secret plan" to end the war...remember?) and he drastically reduced the number of troops from a high of 486,000 in 1968 to only 50 (!) in 1973. The first vote to "defund" the war wasn't until Ford was prez...so late 1974 at the earliest and Congress reduced funding from $1.26 billion to 700 million...hardly drastic (sheesh, $1.26 billion is about 4 DAYS in Iraq and while I understand inflation, the diff is not ALL due to inflation.)
I lived through this period of time and while I remember Congress getting pissed at Nixon and his negotiations which seemed to produce no results (and bombing Cambodia etc.), I certainly don't remember Congress being heavy handed. Do I remember it incorrectly? Was it really the Dems in Congress who ended the war or are we just "blamed" (for losing a war which could have been war and thus being responsible for the blood bath in Cambodia blah, blah) because the GOP doesn't want to admit a republican "lost" the war?
(Got my numbers here, which is about how I remember it...even though the history channel story in the first link is pretty inflammatory. The numbers in the article don't match the rhetoric of the Dems losing the war...to my thinking.)
http://hnn.us/articles/31400.htmlhttp://members.aol.com/warlibrary/vwatl.htm