Some officials have expressed concern about the potential cost.

Mr. Harding has also expressed concern about the high cost of consultants.

American officials have expressed concern about the cost of the Chinese proposal.

But he, too, expressed concern about the cost.

However, concern is also expressed about the extensive cost and potential abuse of high-tech smartcards.

Some senators and representatives expressed concerns about the cost of the redesigned space station at hearings held earlier this month.

The city council expressed concern about the cost.

The White House expressed concern about the cost but appears prepared to sign the legislation.

Local museum directors have also expressed reservations about the cost and scope of the Guggenheim project.

Mr. Jasinowski expressed concern about the cost of new benefits.