WATCHING the 2008 presidential campaign, you sometimes get the feeling that the candidates  smart, all of them  must know better. They must know we can’t fix our economy and create jobs by isolating America from global trade. They must know that we can’t fix our immigration problems with border security alone. They must know that we can’t fix our schools without holding teachers, principals and parents accountable for results. They must know that fighting global warming is not a costless challenge. And they must know that we can’t keep illegal guns out of the hands of criminals unless we crack down on the black market for them.

The vast majority of Americans know that all of this is true, but  politics being what it is  the candidates seem afraid to level with them.

Over the past year, I have been working to raise issues that are important to New Yorkers and all Americans  and to speak plainly about common sense solutions. Some of these solutions have traditionally been seen as Republican, while others have been seen as Democratic. As a businessman, I never believed that either party had all the answers and, as mayor, I have seen just how true that is.

In every city I have visited  from Baltimore to New Orleans to Seattle  the message of an independent approach has resonated strongly, and so has the need for a new urban agenda. More than 65 percent of Americans now live in urban areas  our nation’s economic engines. But you would never know that listening to the presidential candidates. At a time when our national economy is sputtering, to say the least, what are we doing to fuel job growth in our cities, and to revive cities that have never fully recovered from the manufacturing losses of recent decades?