shore up

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Dredge material should be pumped immediately via pipes from navigation channels in the delta, including the Mississippi River, to shore up hot spots of wetland loss.
The enforced accountability that is supporting insurers' stocks in the equity markets also may shore up their debt offerings, as Europe's approaching adoption of the Solvency II capital adequacy standard prompts closer examination of bond offerings.
Borrowing a page from the Republican playbook, he summoned a group of white shoe lobbyists to the Capitol and gave them marching orders to shore up support among wavering Democrats.