美国j1访问学者签证，移民美国途径，最长可以留美5年，配偶有工签，子女免费就读公立学校。

The j1 Visiting Scholar Visa of the United States is the way to immigrate to the United States. You can stay in the United States for up to five years. Your spouse has a work permit and your children attend public schools for free.

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