McCain supporters have a legitimate gripe when they say that Obama's visits to Europe and the Middle East have gotten the attention usually reserved for a visiting head of state - much more attention than McCain received during his world travels.
There are two points to be made that mitigate the apparent bias in favor of Obama.
First, his opponents have made a big deal about the fact that he had never visited Iraq, therefore they are at least partly responsible for the interest in that visit.
Second, the close scrutiny is a mixed blessing. Although the coverage of the two presidential candidates is lopsided, the mainstream press is not reluctant to publicize controversial statements by either candidate or by their high-profile supporters.
Still, even with these points acknowledged, it seems that the national media need to do some self-examination.