So what? Why does that make letting the rest of the world know we'll renege on our treaties a good thing? Even beyond defense issues, that seriously undermines our ability to craft treaties in the future.
Automatic defensive aid is good, even if its under treaty obligation levels, not to mention NATO member cooperation is pretty significant to our own military operation in Europe....Because if US is the only one holding real "automatic defence" policy... why the hell have NATO at all? Just call it "US defence pact"