How did personal liberty laws increase tensions between the north and the south over the fugitive slave act? a: some southern states used personal liberty laws to force northern states to return runaway slaves. b: some northern states used personal liberty laws to nullify the fugitive slave act, written to the south. c: personal liberty laws awarded $10 to judges who ruled against slaves and $5 to judges who set slaves free. d: personal liberty laws forbade both northern and southern states to catch and return fugitive slaves.