Madison - The State Democratic Party of Wisconsin on Monday filed a complaint with the state's Government Accountability Board, accusing Gov. Scott Walker of violating ethics and campaign finance laws.

In a teleconference with reporters, Mike Tate, the chairman of the Democratic Party, said the allegations against Walker deserved further scrutiny.

The complaint stems from a phone call a prankster, posing as billionaire conservative activist David Koch, made to Walker on or around Feb. 22.

According to the complaint, Walker is alleged to:

1. Have asked the impostor posing as Koch to run ads in the districts of Republican incumbents in swing districts. That would constitute an illegal, third-party coordination to initiate an independent expenditure.

2. Have spoken to the impostor from his office in the State Capitol. The law prohibits requesting a political contribution inside any state-owned building.

3. Have asked the attorney general's office to look into strategies to force the Democratic senators to return. According to the complaint, "this constitutes a misuse of the independently elected office of the attorney general for primarily political motivations."

4. Have consulted with staff members to consider planting troublemakers to "incite violence in the peaceful crowds," as that "would scare the public into thinking that maybe the governor has to settle to avoid all of these problems.” The complaint alleges that such activity constitutes a conspiracy to recklessly endanger safety.

5. Suggesting he would send out layoff notices to public-sector employees in an attempt to put pressure on missing Democrats. According to the complaint, "this use of threat against, and intimidation of, public sector employees for political purposes constitutes an unfair labor practice."

6. Have been offered a trip to California by the impostor posing as Koch. According to the complaint, state public officials may not use his or her public position to obtain financial gain or anything of substantial value for the private benefit of himself or herself.

"We think there are a host of legal and ethical problems that arise from this phone call that we believe deserved further scrutiny," Tate said.

All complaints filed with the Government Accountability Board are assessed to determine if they are worth investigating. The board can authorize an investigation, and issue subpoenas, take depositions, and ask courts to issue search warrants.

All investigations are confidential.

A spokesman for Walker had no immediate comment.