<Table> <Tr> <Td> </Td> <Td> This section is empty . You can help by adding to it . (October 2017) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section is empty . You can help by adding to it . (October 2017) </Td> </Tr> <P> Relations between Brian Mulroney and Ronald Reagan were famously close . This relationship resulted in negotiations for the Canada--United States Free Trade Agreement, and the U.S.--Canada Air Quality Agreement to reduce acid - rain - causing emissions, both major policy goals of Mulroney, that would be finalized under the presidency of George H.W. Bush . </P> <Table> <Tr> <Td> </Td> <Td> This section is empty . You can help by adding to it . (October 2017) </Td> </Tr> </Table>

What other factor besides politics keep the federation united