In the last 22 federal capital cases to reach a jury, a death sentence was imposed once.

Any such sentence, once imposed, may not be appealed, commuted, or pardoned.

But conservatives tend to oppose this levy on the ground that, once imposed, it opens up an enormous money-raising potential for the Government.

These fines were once imposed as a means of traffic control.

Local zoning regulations, once imposed by municipal authorities, can be lifted in favor of "important" projects.

Worship today is a far cry from the rituals once imposed by European missionaries.

And he added that cuts, once imposed, could be reversed.

Brewers and bottlers once imposed deposits to encourage consumers to return glass bottles.

Once imposed, there would be no turning back.

Once imposed, a rentcharge continues to bind all the land even when the land is later divided and sold off in plots.