At least six Fox News contributors have reportedly signed on to an open letter opposing the comprehensive immigration reform legislation currently being debated in the Senate. Fox News, which has admitted it is the “voice of opposition” on certain issues, has long ignored and even fostered such unethical behavior from its personalities.

According to Yahoo! News, conservative radio hosts, along with tea party and other conservative groups, have signed a letter opposing the Border Security, Economic Opportunity, and Immigration Modernization Act, a proposal from a bipartisan group of senators to reform immigration law. Among the “National Conservative Leaders” who have reportedly signed the letter are six current Fox News contributors:

• Monica Crowley, Ph.D., Nationally Syndicated Radio Host
• Erick Erickson, Editor of RedState
• Laura Ingraham, Nationally Syndicated Radio Host
• Michelle Malkin, author of Invasion and syndicated columnist
• Sandy Rios, Vice-President Family PAC Federal and Morning Host for AFR Talk
• Former Congressman Allen West

However, their affiliation with Fox News was not mentioned in the letter.

Radio hosts Mark Levin and Lars Larson, who also signed the letter, are regular Fox News guests as well. Daily Beast editor and CNN contributor David Frum also signed the letter.

The letter expresses “serious concerns” with the bill and urges Senators to vote against it:

We oppose this bill and urge you to vote against it when it comes to the Senate floor. No matter how well intentioned, the Schumer-Rubio bill suffers from fundamental design flaws that make it unsalvageable. Many of us support various parts of the legislation, but the overall package is so unsatisfactory that the Senate would do better to start over from scratch.

[...]

Reforming our immigration system is an important priority. But S.744 is such a defective measure that it would do more harm than good. We urge you to vote against it and against any cloture vote to bring up the bill. Only then can a constructive, measured debate take place on how to improve America's immigration policy.

The letter also repeats some common myths about immigration, including the debunked notion that granting undocumented immigrants legal status "[h]urts American job-seekers, especially those with less education." The letter also compares the Senate immigration bill to the health care law, calling it “bloated and unwieldy.”

Fox News has been criticized for unethical behavior in the past and for operating like a political organization. In fact, Crowley crossed the ethical line during the 2012 presidential election when she spoke at an anti-Obama rally sponsored by the Koch-funded conservative advocacy group, Americans for Prosperity.

Fox News has long styled itself as an anti-immigrant network even as it purports to reach out to Latino viewers. Rush Limbaugh, for example, stated in January that it's “up to me and Fox News” to defeat immigration reform. As Yahoo! News noted however, Limbaugh was “notably absent” from the list of signatories.