WASHINGTON (Reuters) – The U.S. Supreme Court on Monday agreed to hear cable television operator Comcast Corp’s bid to throw out comedian and producer Byron Allen’s racial bias lawsuit accusing the company of discriminating against black-owned channels.

The justices will review a decision by the San Francisco-based 9th U.S. Circuit Court of Appeals that cleared the way for a $20 billion civil rights lawsuit against Comcast to proceed. At issue in the litigation is the refusal by Comcast to carry channels operated by Entertainment Studios Networks, owned by Byron Allen, who is black.

The justices did not act on a similar appeal by Charter Communications involving claims by Allen after the company also declined to carry his channels. That case likely will be guided by the outcome in Comcast’s appeal.

Comcast and Charter have said their business decisions were based on capacity constraints, not race, and that Allen’s channels, including JusticeCentral.TV, Cars.TV, Pets.TV and Comedy.TV, did not show sufficient promise or customer demand to merit distribution. Other television distributors, including Verizon, AT&T and DirecTV, carry some of Allen’s programming, court papers said.

Entertainment Studios Networks sued in Los Angeles federal court, accusing the cable companies of violating the Civil Rights Act of 1866, a post-Civil War law that forbids racial discrimination in business contracts.

The suits brought by Allen pinned the rejections primarily on racial discrimination, accusing cable executives of giving insincere or invalid excuses and granting contracts to carry white-owned networks during the same period.

The lawsuits also alleged that the companies’ commitments to diversity are a sham and that they have used outside civil rights groups, such as Reverend Al Sharpton’s National Action Network, to provide cover for empty promises. Comcast called those accusations “outlandish.”

Both Comcast and Charter called the lawsuits a “scam” and sought to have the cases dismissed. But the 9th Circuit last year allowed the litigation to proceed.

At issue is whether individuals who are refused a business contract can sue under the civil rights law without ruling out reasons other than discrimination for the refusal. The 9th Circuit said lawsuits can proceed to trial if plaintiffs can show that discriminatory intent was one factor among others in the denial of a contract.