The more stringent rules increased the costs per passenger.
And some states have adopted even more stringent rules.
New, more stringent rules also took effect this year for testing the validity of ballots.
Congress also instituted more stringent rules to reduce fraud in the program.
The vice-president's remarks defied recent moves by the US military to establish more stringent rules.
After two decades of deregulation, they will now have to contend with more stringent rules.
New, more stringent rules being introduced will push the figure above 30percentt, other Chinese regulators have said.
However, after the PPI scandal, companies are making up their own, more stringent, rules to avoid future compensation claims.
Other countries, like Switzerland, are already moving independently to impose even more stringent rules on big banks.
He took to Twitter to argue that gun owners had an obligation to promote more stringent rules on firearm ownership.
Lawmakers could also mandate even more stringent rules on how companies can share data with third parties.
