Sen. David Vitter, R-La., said in a statement emailed to reporters:

The news of the IRS bias is terribly unsettling. If the IRS is discriminating against religious and conservative campaign groups, how can we trust it to objectively run Obamacare? An apology isn’t enough, and I’ll be going through the investigative report immediately once it’s released, but I think we need a full audit of the IRS to determine the full extent of who ordered the targeting of conservative groups.