A working mother, proponents assert, provides a positive role model for her children.

Proponents of the Massachusetts law assert it has already helped improve safety.

Proponents asserted that it had a profoundly positive impact on people's lives.

Proponents of the tax assert that it will reduce price volatility.

Proponents of the legislation assert that the change is necessary to protect workers' rights to join unions.

Proponents assert that equivalent or higher overall capacity can be achieved by these means.

Proponents asserted, however, that the characters' origins would not matter if the programs were entertaining and educational.

Proponents here and in Canada assert that the trade pact is essential to building an even greater economic partnership between the two countries.

Proponents of some studies assert that individuals will give to government, paying voluntary taxes to support specific functions.

Proponents of "intelligent design," for example, assert that the earth is too complex to have been created by random processes.