The organizations at issue are known as 501(c)4 groups (call them C4s for short) after the section of the tax code that applies to them. They're nonprofit "social welfare" organizations that by law must be devoted primarily to programs broadly serving their communities, not private groups. IRS forms reveal what the agency considers to be mainstream C4s: religious groups; cultural, educational and veterans organizations, homeowners associations, volunteer fire departments. In recent years, however, overtly political groups have been claiming C4 status, which allows them to keep their donor lists secret and to avoid paying taxes on certain income.
Our lunatic campaign finance system is what turned the typical C4 from a volunteer fire department into a conduit of anonymous political cash. Big donors were given the green light to spend freely on elections by the Supreme Court's 2010 Citizens United decision. That wasn't good enough for some; they wanted to distribute their largess secretly.
If the above has merit, then the ONLY question is were Right wing groups scrutinized at a higher standard than other 501c-4s.
If the answer is NO, then no harm no foul.
If the asnswer is YES, then heads must roll.
But more to the point?
Are 501c-4s really a good idea?
I think they are not.