Gobzems had earlier said the Constitution Protection Bureau would deny him the clearance. He said that this happened because others want to get rid of him as a "representative of the new politics and new way of thinking".
He went on Facebook to vent his anger, implying that the bureau's chief Jānis Maizītis had been a member of the Soviet secret service KGB.
"It sends a message from Jānis Maizītis, who didn't want to open the KGB files: don't get into politics, we, the chekists, will find the most absurd reason not to allow it," he wrote.
For Gobzems, getting a security clearance was a vital matter when he tried setting up a government following the October 6, 2018 election. The Constitution Protection Bureau said checks could take months, while Gobzems wanted to change the order of granting clearance, vital for taking a government post.
But Gobzems failed to set up a government after acts of bizarre political brinkmanship and was later booted from his own KPV LV party.