Oh there is no doubt that Nixon was a complex individual, incredibly intelligent and capable who has some substantial accomplishments. SALT II and the normalization of relations with China for starters.
I won't count his signing the Environmental Protection Act or The Occupational Safety and Health Act to his credit as those were congressional initiatives in which congress had a veto proof majority.
As for his screw ups and abuses of power.
He grossly lied and decieved the American people about ending the Vietnam war when he actually expanded. Nixon didn't "end" the Vietnam war. He lost it.
Then Nixon wreaked the US economy with his gold fiasco, implementing wage and price controls and his mishandling of the Israeli/Arab conflict that led to the OPEC oil embargo that created the period of stagflation that lasted until the end of the 70's when Carter implemented the measures needed to end it.
Then the dumbass hired Spiro Agnew as his running mate in 72. Agnew as an idiot and a criminal who was convicted of fraud and tax evasion. He was Nixon's SOP to southern rednecks and racists as part on Nixon's southern strategy.
Speacking of the devil, the Southern Strategy is Nixon's baby and it's the gift that keeps on giving has polluted and damaged the nations political discourse since Nixon implemented it. The current shutdown fiasco that just occurred is a direct lineal descendent of Nixon's Southern Strategy.
