Which of the following is an example of preemption? Click or tap a choice to answer the question. Oregon passes an environmental protection policy aimed at reducing water pollution before the federal government does. The federal government raises accessibility standards for the disabled. Any state with less stringent standards than the federal minimum must raise them. The federal government offers Louisiana 500 million in grants-in-aid with the stipulation that the state uses the money to update its levees. Maine's minimum wage is lower than the federal minimum wage. Maine is allowed to keep its minimum wage because the needs of the states are more important that federal laws.