I guess John Kerry doesn't understand that when you win the Presendential Election, you have the Constitutional right to nominate anyone you want:

He is packing the court with conservative ideologues who will extend the legacy of his presidency for years to come.

That's called checks and balances

Later, he acknowleges this:

I know better than anyone that elections have consequences and that the President has every right to nominate whomever he chooses to replace Justice Sandra Day O'Connor. But I also know that Senators have the right - in fact, they have a constitutional responsibility, to question whether that nominee is the right choice. That is why the Framers required the Senate to provide advice and consent. We are not meant to be a rubber stamp. We need not rush to judgment simply to satisfy the political deadline of a State of the Union address.

but still doesn't get the concept of Senators are to review Alito's credentials not his opinions.

   John Kerry: The Vote Of A Lifetime - Yahoo! News