The Senate maintains strict rules on the type of content that can be posted on Senate.gov sites. Majority Leader Harry Reid (D-NV) seems to have violated those rules by setting up a page attacking the Koch Brothers on his Senate website.
The Senate Internet service usage rules states:
Senate Internet Services ("World Wide Web and Electronic mail, BLOGs, Podcasting, streaming media, etc.") may only be used for official purposes. The use of Senate Internet Services for personal, promotional, commercial, or partisan political/campaign purposes is prohibited.
Those rules have not discouraged Reid from dedicating an entire webpage on his Senate.gov site to his partisan campaign against the Koch Brothers. The page boldly labeled "THE FACTS ABOUT THE KOCH BROTHERS," features a list of political articles representing misleading political attacks against the conservative donors, such as "The Kochs want to put insurance companies back in charge of your health care" (they want to repeal Obamacare), "The Kochs are trying to dismantle our public education system" (they support school vouchers), and "The Kochs spent $400 million on misleading attack ads in the last election cycle" (because Senator Reid believes any conservative political ad is misleading).
One of the claims on Reid's webpage alleges that the Kochs do not pay any corporate taxes, which was proven to be an outright lie by The Weekly Standard:
The claim that the Koch brothers don't pay corporate income taxes was first made by former White House official Austan Goolsbee, but Koch Industries lawyer Mark Holden disputed the accusation and raised the question of whether someone in the Obama administration illegally accessed the Kochs' tax returns. Goolsbee's comments led to a federal investigation--the results of which have never been released.
In October 2010, Press Secretary Robert Gibbs said that Goolsbee's claim "was wrong." But that hasn't stopped the Senate majority leader from promoting the claim four years later.
Charles Koch has also written a Wall Street Journal op-ed defending himself against the attacks from Reid and other Democrats.
H/T: The Daily Caller