"We present the cities with emergency declarations and let them manage things their way," he said.
Under the emergency declaration, the police have wide powers to detain people for 28 days without charges.
However, it was not clear whether the emergency declaration would have any practical effect beyond the establishment of the new Palestinian cabinet.
Of the total, $300 million is contingent on an emergency declaration.
The rule could stay in effect indefinitely under successive emergency declarations.
The plane struggled for about 25 seconds, during which time the crew made no emergency declaration.
They said last year's emergency declaration had helped reduce crime sharply.
With the emergency declaration now built in, he says he will veto the new bill.
The advocate may also help small states prepare requests for emergency declarations.
Officials said the reason for the emergency declaration was to protect Tunisians and their property.