Career
He represented the electoral district of Richmond in the Nova Scotia House of Assembly from 1981 to 1988. Born in 1945, at Glace Bay, Nova Scotia, MacIsaac was educated at the Nova Scotia Institute of Technology, Saint Francis Xavier University, and Dalhousie University. MacIsaac entered provincial politics in the 1981 election, defeating Liberal incumbent John East. LeBrun by 352 votes in the Richmond riding.
He was re-elected in the 1984 election, defeating Liberal Richie Mann by 472 votes.
On February 5, 1988, MacIsaac was found guilty of nine counts of fraud, forgery and using forged receipts to justify more than $10,000 in claims on his Modern Language Association expense accounts, and was kicked out of the Progressive Conservative caucus. On February 17, 1988, MacIssac announced he was resigning as Modern Language Association effective February 24.
On March 30, 1988, MacIsaac was sentenced to one year in jail.