A 20-year member of Congress indicted on racketeering charges is challenging restrictions on his ability to meet with colleagues as "an undue and unnecessary burden...that is effectively impairing his ability" to do his job.

Last month, a federal grand jury in Philadelphia indicted Rep. Chaka Fattah, D-Penn., on conspiracy, bribery, and fraud counts for allegedly using political campaigns and nonprofit groups to cover personal expenses and evade campaign finance laws.

Fattah has pleaded not guilty and he remains free pending trial. He's indicated a desire to run again, though after the charges became public he stepped aside from a leadership post on a panel that oversees the Justice Department and FBI budgets.

Prosecutors in Philadelphia and Washington convinced a judge to limit Fattah's contacts with 122 people who could be called as witnesses in the case. Among them: Sen. Robert Casey, D-Penn., Rep. Ted Deutch, D-Fla. and former Pennsylvania Gov. Ed Rendell.

Lawyers for Fattah have asked the judge to relax those conditions, which they said require the lawmaker to have an attorney on the phone to supervise communications "including those that deal solely with legislative matters."

"Mr. Fattah does not pose any sort of danger to the community and the court has imposed sufficient other conditions that will ensure his appearance at trial," wrote his defense attorney Kevin V. Mincey. "Presumably, the concern is that Mr. Fattah and others will be able to improperly coordinate their stories. However, given that all of the defendants and potential witnesses have known about the investigation for several years, this risk is overstated and moot at this point."

Mincey added that the restrictions carry a substantial price-tag in attorney fees and also tie him up from preparing a defense in the case.

For their part, prosecutors point out that the restrictions on contacting possible witnesses do not apply to members of Fattah's family or his current congressional staff. They are opposing the lawmaker's request, arguing that he doesn't explain why he needs to speak with 21 people on the "stay away" list.

The prosecutors added that Fattah "seems to be interested" in getting around ethics rules that prevent his lawyer from contacting many of the possible witnesses, including former aides, public officials and personal friends of Fattah, who are represented by their own lawyers.

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