They're major sponsors of both parties. According to http://fortune.com/2017/03/08/wall-street-2016-election-spen... their donations in 2016 split about 45-55 Democrat-Republican. In 2012, according to http://www.businessinsider.com/wall-street-responsible-for-o... they contributed significantly to Obama's re-election campaign.

If you really think the "finance industry" as a whole is what's pushing for the Equifax investigation to be shelved, then I expect the same would have happened under Democratic leadership.