(a) The commissioners court of a county that borders Mexico, or of a county adjacent to a county that borders Mexico, may, in consideration of the benefits of flood control work performed by the United States, by resolution agree to:
(1) indemnify and hold harmless the United States and its officers, agents, or employees for damage or a claim for damage asserted by any person if:
(A) the damage or claim arises from or is connected with the action of the United States or its officers, agents, or employees in entering, occupying, constructing on, or exercising a right in or to land located in the county; and
(B) the action by the United States or its officers, agents, or employees is in connection with the construction, reconstruction, alteration, extension, improvement, maintenance, or operation of flood control works or works that are connected or incidental to flood control works;
(2) obtain any release or waiver of claims and provide evidence of the county’s interest in land located in the county and needed for flood control works or works that are connected or incidental to flood control works, as required by the United States; and
(3) acquire and without monetary compensation convey to the United States any interest in land located in the county and needed for flood control works, on request of the United States.
(b) The commissioners court, county attorney, and county engineer shall do all things useful and necessary to carry out the provisions of the agreement.

(c) If the agreement provides for the conveyance of an interest in land to the United States, the county judge may convey the interest by warranty deed on behalf of the county according to the terms of the agreement.