Another persistent issue has been the pressure for greater rights for Mexico's indigenous people.

But efforts to control sprawl will be one of the persistent issues as housing growth continues in the 90's.

Though his back has been a persistent issue this season, it has not caused him to miss a start.

This illustrates that cancer will continue to be a persistent issue over the next few years.

Bodybuilding is up front about one of sports' most persistent issues - drug use.

The screening material that he planned to use, however, was cut from the budget, and glare has been a persistent issue.

Crime is also a persistent issue, with campus security responding to 257 crimes in 2008.

Nonetheless, it has remained a persistent political issue in Quebec.

Safety hazards have been a persistent issue over the years, the records show.

You have to be issue oriented and persistent to bring change about.