He urged them to reject the idea until the issue could be addressed.
Speaking on BBC1's Breakfast programme, McDonnell rejected the idea that the issue was being ignored.
A spokesman for the Bradford Exchange said the company had no idea of the issue's content.
Mr. McCain said he had no idea how the issue of torture would affect the primaries and caucuses.
Trump said Putin "has an interesting idea" about the issue of election meddling, but did not elaborate.
Opinion polls show Germans split over the idea, but the issue is so sensitive that it is unlikely to be acted upon until after the September balloting.
But even if the glass idea works, the issue comes down to a matter of money, according to Mr. Higgins, the erosion administrator.
"These items sat online and on nonindexed servers for the last year and myself and our company had no idea of the issue," he said.
"I have no idea what the issue was.
But Mr Balls said he could back the idea, asking: "The issue is what's the purpose?
