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1. Potential economic benefit: The potential economic benefit can come from two areas. One, lower imports of plants will improve the trade deficit of the country.
Secondly, Imported plants may cause damage to the local ecology and restricting their import would save costs of environmental damage.
2. Potential costs: The first potential cost is that other countries might restrict importing our plants, which would be a blow to the export industry.
Secondly, a whole floriculture industry might be dependent on important plans which might face a lot of trouble after the ban.