When I hear "whistle blower" I think of Karen Silkwood. It's obvious to me why protections exist for these brave souls. Naturally, there are always powerful people who want to continue their dirty deeds unmolested.

Deep Throat's identity wasn't revealed for years after he passed information along to intrepid reporters Woodward and Bernstein, who pursued the lead. IMO, Republicans are just spewing their usual obfuscatory fog. It works a treat on their base.

And of course none of the principals are responding to subpoenas*, so it may take some time to get the whole truth.

*How they get away with that is a mystery to me.