How did president lincoln actions during the civil war violate some people's constitutional rights

Lincoln suspended the right of habeas corpus, or the right to be brought before a judge to tell what one is being charged with, in the border states during the beginning of the civil war in order to prevent them from seceding. He considered it necessary for the preservation of the union.

If he breaks the law then he had to resign from his post and so he'll lose his/her powers.