Donald J. Trump suggested in an interview on Sunday that he would expand his proposed immigration restrictions to include anyone entering the United States from countries or territories “compromised” by terrorism, including allies such as Germany and France.
Mr. Trump’s comments, in an appearance on the NBC program “Meet the Press,” appeared intended to clarify portions of his speech at the Republican convention indicating that he might be rolling back his earlier proposed ban on Muslim immigration. Mr. Trump indicated that the United States needed to protect itself from the failures of countries like France, which he said had allowed itself to be infiltrated by terrorists.
“I actually don’t think it’s a rollback. In fact, you could say it’s an expansion,” Mr. Trump said in the interview with the NBC host Chuck Todd. “I’m looking now at territory.” In the coming weeks, Mr. Trump told Mr. Todd, he would be unveiling a detailed list of countries and territories from which immigrants would be subject to “extreme vetting.”
It has been a tumultuous weekend for both Mr. Trump and the Democratic Party, which was reeling from a data breach that spilled thousands of emails from within the Democratic National Committee, revealing conversations about fund-raising and staffers’ private criticisms of Senator Bernie Sanders of Vermont.
The emails included staff members for the committee, which was required to remain neutral in the Democratic primary, strategizing over how to rebut Mr. Sanders’s criticisms of their handling of the primary process and of its chairwoman, Representative Debbie Wasserman Schultz of Florida. In one email, a party official urged colleagues to get reporters to raise questions about Mr. Sanders’s religious faith to undermine him with Democratic voters in Kentucky and West Virginia.
Mr. Trump and his allies seized on the emails on Saturday and Sunday, saying that they proved the Democratic primary had been rigged against Mr. Sanders and that the senator’s supporters should defect from Hillary Clinton to support Mr. Trump.
Mrs. Clinton’s campaign seized on the hackers’ reported links to Russian intelligence agencies. Appearing earlier on the ABC program, Robby Mook, Mrs. Clinton’s campaign manager, suggested that “Russian state actors” had broken into the D.N.C.’s email accounts and released the emails on Friday in order to help Mr. Trump.
Mr. Mook provided no evidence that the Russian government had directed the release of the emails, which were posted Friday by WikiLeaks. An internal D.N.C. audit conducted by the firm CrowdStrike indicated that the hack was perpetrated by two groups of hackers with ties to Russian intelligence.