Nevada Democrats canceled a presidential debate on the Fox News Channel after Internet activists called Fox "a mouthpiece for the Republican Party." Should the Democrats boycott conservative Fox altogether?  What does this episode say about the growing impact of the Internet on American politics?  Also, President Bush is dogged by domestic issues as he winds up his trip to Latin America and, on Reporter's Notebook, Spain's plan to build a tunnel to Morocco.

• NOTE: For those who were listening to today's program about the