There's a relevant Guardian article today [0]:

'Google executives set foot in the Obama White House more often than those of any other corporation – its head lobbyist visited 128 times. Google spread its money across Washington with joyous ecumenicism. Google spent about $17m on influence peddlers of both partisan varietals. By one count, Google poured more into its DC apparatus than any other public company.'

[0] https://www.theguardian.com/technology/2017/oct/19/surveilla...