The Times explains how a ban on earmarks may not be as complete as you think.

Lettermarking, which takes place outside the Congressional appropriations process, is one of the many ways that legislators who support a ban on earmarks try to direct money back home.

In phonemarking, a lawmaker calls an agency to request financing for a project. More indirectly, members of Congress make use of what are known as soft earmarks, which involve making suggestions about where money should be directed, instead of explicitly instructing agencies to finance a project.