The GAO found that Obama's administration broke 7 laws and yet there was never a scandal or call for impeachment. In fact, the media played their typical game of flipping it around on the GOP, calling it a "political talking point". When documents were subpoenaed for the Fast & Furious investigation, Obama ignored them. Not scandal or calls for impeachment.
So, why exactly is Trump being impeached now for similar actions? Once again the Republicans are being held to standards the Democrats are not.