The National Defense Authorization Act for Fiscal Year 2013 -- passed by Congress in late December and signed by President Obama on January 2 -- removes a restriction that has essentially shut down international cooperation for building amateur satellites in the past decade.

The new law restricts satellite exports only to China, North Korea and countries identified as state sponsors of terrorism, as well as those under trade embargoes. A recommendation from the departments of state and defense said the old law impeded the ability of American satellite builders to work with international partners while "providing no noticeable benefit to national security."