Initially, issues with thermal back-reactions and destructive reading dogged these studies, but more recently more-stable systems have been developed.

The issue has dogged legislators since 1968, when parents in a poor San Antonio school district filed suit against the state.

Another hot issue is also dogging the Governor.

This issue, as I indicated two weeks ago, has dogged American intelligence for decades.

The issue has dogged the talks for two decades.

Legal issues dogged him almost from the beginning.

Both issues have been dogging him in recent weeks, and his Republican opponents have tried to make use of them.

At a time of high unemployment, the issue of the Government's generous hospitality toward a religious leader has dogged his appearances.

The issues dogging the retail industry range from the secular to the sociological, and the challenges may take years to work through.

The issue of Dodgson's relationships with little girls has dogged the author's reputation for years.