Complex sentence: The closest thing to a national paper the U.S. has is "USA Today", which along with the influential dailies are the "New York Times", the "Washington Post" and the "Wall Street Journal" are sold in most U.S. cities.
Split into simpler sentences: The closest thing to a national paper the U.S. has is "USA Today". Other influential dailies include the "New York Times", the "Washington Post" and the "Wall Street Journal" which are sold in most U.S. cities.