Updated 12:16 p.m. March 16, 2011 with comments from McCaskill.
Missouri Senator Claire McCaskill says she is embarrassed by the recent revelation that she was reimbursed for using a private airplane to attend a political event in 2007.
The democrat's comments come a day after the Missouri Republican Party filed an ethics complaint against her.
Despite a campaign ad attacking the practice, Governor Jay Nixon says he has no plans to scale back his air travel.
Earlier this week the Missouri Republican State Committee began airing radio spots criticizing the Democratic governor’s air travel, dubbing him “Air Jay.”
Governor Nixon also has come under fire from the legislature and the state’s auditor, for billing state agencies for his trips on state planes, about $400,000 over two years.
Missouri's Republican State Committee is taking aim at Governor Jay Nixon already.
There's no Republican candidate yet in the 2012 race for Missouri governor.
But the GOP committee is already running a radio spot that lambasts the Democratic governor's air travel expenses, referring to him as "Air Jay".
Nixon has come under fire for billing state agencies $400,000 over two years for his air travel around the state.
Republicans in Missouri are praising Monday's ruling by a federal judge in Virginia that declared portions of the new federal health care law unconstitutional. The Missouri Republican Party released a statement criticizing Democratic Senator Claire McCaskill for supporting the bill.
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