Also, the Washington DC sewer system would show if somebody did flush documents down the toilet. Paper is thick enough so that enough pages in a toilet would plug it. But even that doesn't prove President Trump flushed important documents relating to anything. For all we know, one of the grandkids might have accidently flushed a document, that one of Grandma's aides was typing, down the toilet.
Also, the Washington DC sewer system would show if somebody did flush documents down the toilet. Paper is thick enough so that enough pages in a toilet would plug it. But even that doesn't prove President Trump flushed important documents relating to anything. For all we know, one of the grandkids might have accidently flushed a document, that one of Grandma's aides was typing, down the toilet.