Plenty. He chaired a Senate committe (just as Hunter chaired a Congressional Committee). He often swam against the tide when he felt legislation was not federalist in nature. He helped take on a corrupt governor in Tennessee long ago. He helped get Roberts confirmed.
He's done a lot of key stuff. But unlike a lot of pols nowadays, some of the best praise about Fred is what he HASN'T done - seen the fedgov as the solution to all problems.
First off, no, Fred did not help Roberts get confirmed. He was out of office by 2003. Roberts wasn’t confirmed until 2005.
And as for his committee...
To quote Wikipedia, his committee oversaw “the functioning of the government itself, including the National Archives, budget and accounting measures other than appropriations, the Census, the federal civil service, the affairs of the District of Columbia, and the United States Postal Service.”
If you ask me, that’s probably one of the more mundane committees one could chair. So much that instead of adding a new Homeland Security committee, they just tagged it onto that one.