1.   An agreement does not require Senate ratification.

2.   Any agreement would require approval by shareholders of all three companies, as well as the U.S. Surface Transportation Board, which regulates the railroad industry.

3.   Any agreement would require approval in a referendum.

4.   Any Palestinian agreement will probably require Barak to remove or consolidate West Bank settlements.

5.   Any Syrian agreement will undoubtedly require Barak to remove all Golan Heights settlements.

6.   Any agreement would require approval from the U.S. Surface Transportation Board.

7.   Any agreement would require the approval of the two parliaments and referendums in Ulster and the Irish Republic.

8.   Any new agreement would require Pakistan to agree to stringent economic reforms.

9.   As with most mergers, the agreement requires both companies to obtain all necessary regulatory approvals.

10.   Bank loans are more cumbersome to trade because most loan agreements require approvals by the bank that arranged the loan and the borrower before the loan can be sold.