Isaac represents farmers, ranchers, estates, owners of mineral interests, and owners of closely held businesses in a range of legal and tax matters. He practiced with a national accounting firm in New York and Nevada before attending law school. He worked for a real estate development company during and immediately after law school. Isaac's father grew up on a ranch north of Napoleon, North Dakota and his mother's family operated a small business in the Fargo-Moorhead area. He is a native of Fargo, North Dakota.