And it is bound to be challenged on constitutional grounds.

The city's effort undoubtedly will be challenged on statutory grounds as well.

Nonetheless, he said the newspaper might be able to challenge the law on several grounds.

Other opponents have challenged it on environmental and financial grounds.

Piagetians' accounts of development have been challenged on several grounds.

If local residents are successful in challenging the project on environmental grounds, there could be further delays.

The authenticity of the site has been challenged on several grounds.

Yet the evidence suggests that the current policy should also be challenged on grounds of national security.

The law, which took effect Sept. 1, was at first challenged on constitutional grounds by the civil liberties group.

Some consumer advocates said they thought the takeover would be challenged in court, on environmental and other grounds.