In the next section , Perry discusses slavery .
In the next section , Perry argues that such legislation as the Fugitive Slave Act of 1850 and the Supreme Court decision in Dred Scott v. Sandford were assaults on the states ' rights of the northern states .
In the next section , Perry discusses slavery and argues that such legislation as the Fugitive Slave Act of 1850 and the Supreme Court decision in Dred Scott v. Sandford were assaults on the states ' rights of the northern states .