This is important because if Nixon's administration wasn't ideologically liberal, why pass liberal policy? The reason has to do with the political environment of the 60's and early 70's, which had enough populist solidarity that it could effectively pressure the administration. Compare he Privacy Act of 1974 - what the was in response to - to the insane privacy violations going on today, yet we aren't capable of passing an updated privacy act because we lack populist solidarity on the issue. The populism of today is apathetic and fragmented compared to the movements of the 60's and 70's, so consequently it exerts less political pressure.