As previously mentioned, the Supreme Courts decision comes on the heels of the widely reported school shooting that took place at Marjory Stoneman Douglas High School in Parkland, Florida on February 14.
The conservative justice went on to accuse the Supreme Court of having a negative bias against the Second Amendment, citing their "continued inaction in this area".
After issuing major Second Amendment-related rulings in 2008 and 2010, the Supreme Court largely has steered clear of deciding other important rulings on the issue.
In his dissent Tuesday, Thomas dwelled on what he called "dismissive treatment" of the Second Amendment claims in the case.
The justices left intact California's 10-day waiting period for gun purchases, turning away arguments that the policy violates the rights of people whose background checks take less time.
The 9th Circuit had reasoned the California law prevents gun violence by imposing a cooling off period, and that the waiting period could stop a subsequent gun purchaser who wants to buy a larger capacity weapon that could do more harm when fired into a crowd.
The NRA and California gun-rights advocates argued that the state was unconstitutionally using $5 of each $19 transfer fee for what the group says is an unconnected program. In another case, the Ninth Circuit held that laws embracing traditional marriage failed heightened scrutiny because the states presented "no evidence" other than "speculation and conclusory assertions" to support them.
"If a lower court treated another right so cavalierly, I have little doubt this court would intervene", Thomas wrote.
Denial of certiorari comes amid a backlash to Second Amendment absolutism in the wake of yet another mass shooting. "We have not heard argument in a Second Amendment case for almost eight years".
"I suspect that four members of this court would vote to review a 10-day waiting period for abortions, notwithstanding a state's purported interest in creating a "cooling off" period", he wrote.
The waiting period gives a gun buyer inclined to use it for an impulsive objective a "cooling off" period, which has been shown in studies to reduce handgun suicides and homicides, the state said in legal papers.