At Notre Dame Sunday, President Obama took on the issue that has dogged his visit and sharply divided and polarized Americans for decades - abortion.

• 星期天，在圣母大学，奥巴马总统开始着手“堕胎”这个不仅对影响了他的巡防，而且将美国人严重两极化了的存在了几十年的问题。