Inter-Region VPC Peering is Accessible in AWS GovCloud (US)

Amazon VPC allows you to start AWS resources into a virtual network which you have described. A VPC peering connection is a networking connection between two VPCs which allows you to route traffic between them with the help of private IPv4 addresses or IPv6 addresses. Inter-Region VPC Peering permits VPC resources, like Amazon EC2 instances, Amazon RDS databases, and AWS Lambda functions, to divulge with each other at the time of executing in various AWS Region. Since Inter-Region VPC Peering uses private IP addresses, it does not need gateways, VPN connections, or a discrete physical hardware. It gives an easy and cost-effective way to share resources between regions and copy data for geographic redundancy. Now Inter-Region Virtual Private Cloud (VPC) Peering can be setup between the AWS US Govcloud (US) Regions: AWS GovCloud (US-Gov-West) and AWS GovCloud (US-Gov-East). Data moved over Inter-Region VPC Peering connections is charged at the standard inter-region data transfer rates. To know more on Amazon VPC Peering, refer this documentation