Answer:
There is an ethical violation here known as patchwork plagiarism.
Explanation:
From the question; she imports intact the ideas and support from these sources as her speech's main ideas and supporting material.
The bold text above means she imports the ideas from these text wholly or completely. This known as plagiarism and definitely, an ethical violation has occurred irrespective of whether or not she credited the sources.
The term Plagiarism includes the following
Apparently, Maggie is guilty of (1) and (2) above. With these two violations, it's right to conclude that there is an ethical violation here known as patchwork plagiarism.