The short answer is “no.” Obama cannot be legally arrested just for his policies, no matter how wrong (even treasonous) we may think they are, until he is impeached by the House of Representatives and convicted/removed by the Senate. The constitutional process for removing a president, who has not been incapacitated in some way, is via the impeachment process. Arresting Obama for his political decisions would be an illegal coup. No one is empowered to do that and they would be committing a serious crime, if they tried to do it. There is no constitutionally legal substitute for Congress removing a president from office for his political acts.
Some say the Sargent of Arms of the House of Representatives (or Senate) can arrest Obama. However, it would not be practical to expect the largely ceremonial Sargent at Arms to arrest the commander of the armed forces and national police. It is not clear that the Sargeant of Arms even has a gun. It would be like ordering Barney Fife to arrest the President.
Nonprofit organizations are regulated by the Internal Revenue Service (IRS) and the Federal Election Commission (FEC). Many are unwilling to campaign for Obama’s removal via impeachment, because that is a political process and could cause problems with the IRS, endangering their tax exempt status and making it difficult to collect contributions. Calling for Obama’s arrest or resignation is not a political process and apparently is not covered by IRS nonprofit regulations. For this reason it seems that some nonprofits express opposition to Obama by calling for his arrest, even though it is not feasible from a practical and legal point of view. The president is one of the three independent branches of government. The Constitutional way to permanently remove a president is only via the impeachment process.
Can a Sitting President be Arrested by The Conservative Papers