The land issue has become a center of controversy.

He has at times been the center of controversy for his views, teachings, activities, and behavior.

Halcion has been at the center of controversy for many years.

It was not the first time that the guerrilla office had been a center of controversy.

He has been at the center of controversy on other issues.

In his first term, he was often the centre of controversy.

Economic aid to Vietnam has long been a center of controversy.

In late 2010, early 2011, Jackson found herself at the centre of controversy.

These implants have been the center of controversy for almost 30 years.

In the 16th century, Ratramnus' work once more became the center of controversy.