Salmon is one of many foods naturally rich in magnesium. Magnesium for arthritis can be taken as an oral supplement and often comes in combination form with calcium and potassium. Nuts are typically good sources of magnesium. Tofu is rich in magnesium.
ACE stands for the U.S. Customs and Border Protection's (CBP) Automated Commercial Environment, which is the primary system the trade community will employ to report imports and exports to the government to determine admissibility.
In most countries, customs are attained through government agreements and international laws. A customs duty is a tariff or tax on the importation (usually) or exportation (unusually) of goods. Commercial goods not yet cleared through customs are held in a customs area, often called a bonded store, until processed. All authorized ports are recognized customs areas. At airports, customs is the point of no return for all passengers, once a passenger has cleared customs, they cannot go back.