Die Unterschiede führen oft genug zum Streit. Daran sind dann nicht mehr die ursprünglichen Vertragsverhandler beteiligt. Statt dessen streiten sich Vertragsmanager, die das anfängliche Meeting of the Minds nie kannten.
Gerade beim Vertrag mit amerikanischen Vertragsparteien empfiehlt sich die Rechtssicherheit, die aus einer Abschlussvereinbarung folgt. Hier ein Beispiel für eine Regelung zwischen Staaten:
An Act Providing for the Cession to the State of Virginia of Sovereignty Over A Tract of Land Located At Battery Cove, Near Alexandria, Virginia.Wie beim Abschlussvertrag wird geregelt, was abgeschlossen wird. Notwendigerweise oder vereinbarungsgemäß überlebende Rechte und Pflichten werden ausdrücklich angesprochen. Kein Ende mit Schrecken. Kein Schrecken ohne Ende. Sondern einfach sauber.
Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That all that part of the territory of the District of Columbia situated on the Virginia side of the Potomac River at Alexandria, Virginia, lying and being between a line drawn from Jones Point, at low-water mark, to Point Lumley, now Pioneer Mills, at low-water mark, and high-water mark on the Virginia shore of the Potomac River at Alexandria, containing an area of forty-six and fifty-seven one-hundredths acres of made land, more or less, be, and the same is hereby, ceded to and declared to be within the territorial boundaries, jurisdiction, and sovereignty of the state of Virginia: Provided, however, That this Act shall not be construed to waive or relinquish the title of the United States to the fee of the forty-six and fifty-seven one-hundredths acres of made land in Battery Cove nor as relinquishing or in any manner affecting the power of Congress to exercise exclusive legislation over the said area so long as the same remains in the ownership and possession of the United States: And provided further, That this Act shall not be construed to affect, impair, surrender, waive, or defeat any claim, right, or remedy, either at law or in equity, of the United States against the Virginia Shipbuilding Corporation for or on account of any debt or obligation of said company to the United States or that hereafter may be ascertained to be due by said company to the United States, by any court of competent jurisdiction of the parties and of the subject matter in any suit now pending or that may hereafter be instituted by the United States against the Virginia Shipbuilding Corporation. D.C. Code, 44 Stat. 1176, ch. 171, 2001 Ed., Retrocession of Battery Cove.