美联社新闻一分钟 AP 伊朗称将提高浓缩铀水平（在线收听）

This is AP News Minute.

An Iranian nuclear spokesman says his country will boost its uranium enrichment levels. He says the nation needs enriched uranium and enrichment levels could pass those set in the 2015 Iran nuclear deal.

President Trump tells ABC News' George Stephanpolous that migrants are heading to the United States because of the strong economy. Trump also repeats his claim that Special Counsel Robert Mueller's report found no collusion.

Mexican authorities have increased enforcement along routes that many migrants use. The Trump administration has been pressuring Mexico to stop the flow of mostly central American migrants heading north towards the United States.

And weather officials say severe storms and at least 4 tornadoes tore through Central Indiana Saturday night. Buildings were damaged and thousands lost power but no injuries were reported.