How did President Johnson try to stop the 14Th amendment from becoming a law?

President Andrew Johnson opposed the 14th Amendment, which aimed to grant citizenship and equal protection under the law to formerly enslaved individuals. He attempted to block its ratification by urging Southern states not to adopt it and by undermining the legitimacy of the Reconstruction efforts. Johnson's resistance included vetoing legislation that supported the amendment and promoting a lenient approach to Reconstruction that favored Southern interests. Ultimately, despite his efforts, the amendment was ratified in 1868.