1. The House of Representatives is set to vote against a bill authorising the US action in Libya in a further blow to Barack Obama's authority. Republicans and Democrats are furious that the US President failed to seek congressional authorisation before the start of the mission as required under the 1973 War Powers Resolution. "The war in Libya is illegal, unconstitutional and unwarranted. It must end," Democratic representative Dennis Kucinich said.
The House will also vote on a bill to cut off funding for US military attacks in Libya. "The president has ignored the Constitution and the War Powers Resolution, but he cannot ignore a lack of funding," said Republican Tom Rooney, the sponsor of the bill. "Only Congress has the power to declare war and the power of the purse, and my bill exercises both of those powers by blocking funds for the war in Libya unless the president receives congressional authorisation."
The measure would allow US forces to remain engaged in non-hostile actions in Libya such as search and rescue efforts, intelligence, surveillance and refueling. The bill is expected to pass in the House but it is almost certain to fail in the Democrat-controlled Senate.
2. Republican frontrunner Mitt Romney has released a new video entitled "Obama's Misery Index: Ryan's Story". In the video, Ryan King of Midland, Michigan, reflects on the woes of unemployment: "I buy bologna and bread, commonly, because it's cheap - what I eat."
The Misery Index, an unofficial chart totalling unemployment and inflation rates, is at one of its highest levels in 28 years. In a sign of how fragile the US economic recovery is, the Index is set to register at 12.7 for May - 9.1 per cent for unemployment and 3.6 per cent for inflation.
3. A new Sarah Palin documentary will premiere in Iowa next week, according to reports. The Undefeated , directed by conservative filmmaker Stephen K. Bannon, chronicles Palin's rise from Alaska governor to vice presidential candidate.
Palin, who has yet to announce whether she will enter the 2012 presidential race, has been invited to attend the premiere. A preview of the film can be seen below.
4. Republican hopeful John Huntsman has opened his campaign office in the bellweather state of Florida. Huntsman, who officially entered the presidential race  on Tuesday, said he chose Orlando for his campaign's headquarters because his wife, Mary Kaye, grew up in the area.
In an address to staff and volunteers, he pledged to avoid personal attacks on his opponents. "I want people who work in this office to remember that civility means something," Huntsman said. "I believe that you don't have to run down another human being to run for president of the United States."
5. Barack Obama is to visit Iowa on Monday as part of his "Winning the Future" tour of companies and manufacturing plants. The US President will tour a Davenport Alcoa plan to highlight the role of advanced manufacturing in American job creation and exports. Obama's visit will follow that of Republican hopeful Michele Bachmann , who is due to officially launch her presidential bid in Waterloo, Iowa, on Monday. Obama won the state in 2008 by 54 per cent to John McCain's 45 per cent.