6.+What+are+the+main+arguments+provided?

The argument for Obama's lack of leadership ability comes from the disclaimer that Obama was ready to block immigration reform and therefore he is not ready to lead is absolutely false. A person is unable to judge whether a person is capable or able to lead based on just one issue such as immigration reform. However, Obama has taken leadership positions on the immigration issue, he just does not agree with John McCain on how to handle the immigration problems America faces.