There are claims of a cover-up involving a Senate Democrat after the deaths of three patients at a VA hospital in Wisconsin.

Sen. Tammy Baldwin learned of the allegations that the patients were being overmedicated at the Tomah Veterans Affairs Medical Center back in August, but reportedly failed to do anything until several months later.

Now, Baldwin has retained a lawyer after questions were raised about not only her delayed response, but also if she tried to cover it up.

Rep. Sean Duffy (R-WI) spoke to Martha MacCallum on "The Kelly File" tonight and said the real issue is that Baldwin fired the staffer who was working on this case and then tried to use taxpayer money as "hush money" for that staffer, so she wouldn't talk about what happened.

He explained it was in the form of a severance package on the condition that the staffer not discuss the case.

Duffy said what's happening is that the focus is being put on Baldwin, instead of the problems with the Wisconsin VA.

"The problem here is that she's not telling us what she knew and when she knew it, which is making this scandal that much bigger than just the significant deaths of our men and women who raised their hand to serve our country."

Watch more above.