Analysis Summary:

The article's factual accuracy is mixed, primarily due to the lack of specific evidence provided within the snippet. The claim that Sen. Cornyn stated Democrats are "getting cold feet" is likely accurate, given the source and the nature of political commentary. However, the interpretation of Democrats' motives is subjective and reflects a Republican viewpoint, indicating a moderate bias.

Detailed Analysis:

• Claim 1:** Sen. John Cornyn says push for new witnesses shows Democrats "getting cold feet" on impeachment.
• Verification Source #N: (None provided - relying on internal knowledge). This claim is presented as Sen. Cornyn's opinion. Without access to the full article or transcript, it's difficult to verify if this is an accurate quote or a paraphrased interpretation. However, given the source (CBS Politics) and the context of impeachment proceedings, it's plausible that a Republican senator would express such an opinion.
• Claim 2:** The top Republican suggested that Democrats are showing a "lack of confidence in what they've done so far."
• Verification Source #N: (None provided - relying on internal knowledge). Similar to Claim 1, this is presented as Sen. Cornyn's opinion. It's a subjective interpretation of the Democrats' actions. The phrase "top Republican" suggests Cornyn holds a leadership position, which is generally accurate.

Supporting Evidence/Contradictions:

• Verification Source #N: (None provided). Due to the lack of provided verification sources, I am relying on internal knowledge of US politics and media reporting. It is common for politicians to offer subjective interpretations of their opponents' actions. The statement aligns with typical partisan rhetoric during impeachment proceedings.
• The absence of external sources prevents a thorough verification of the accuracy of the direct quotes attributed to Sen. Cornyn.