Such a meeting would send a message to North Korea that the international community was unwilling to challenge it, US Ambassador Nikki Haley said.
Pyongyang said its tests proved that the entire US was within range.
The US has responded by testing an anti-missile system and flying bombers over the Korean peninsula.
On Monday, Japanese Prime Minister Shinzo Abe said he had spoken to US President Donald Trump and they agreed on the need for further action on North Korea given its most recent missile test on Friday.
The two did not discuss any use of military action.