How did Jefferson bend his principles

Answer: no article is provided therefore I will take an educational guess in many stories the protagonist either gets into a conflict or starts a conflict therefore I think Jefferson did a bad deed in school therefore he got in trouble

He believed the national security concerns were so urgent that it was necessary to purchase Louisiana without waiting for a Constitutional amendment.

Explanation:

Jefferson was accused of inconsistencies by his opponents. The "Old Republicans" said that he abandoned the Principles of 1798.