No.. [chuckle] those State laws were specifically written to counteract Congress and Fugitive Slave Act of 1850, not the US Constitution per se.
I thought the Supreme Court upheld the constitutionality of the 1850 Fugitive Slave Act. And Lincoln said he would enforce it.
Am I getting the two slave acts confused? I know SCOTUS ruled before 1850 that some of the Northern state laws to circumvent the earlier act were indeed unconstitutional.