Robert, welcome to Pray.Network! I hope your time here will be a blessing to you.
Based on the prayer interests you listed, you might want to check out several groups set up around praying for the country. There's a group called "Cry Out America" started by Phil Miglioratti and one I started called "Praying for the United States". Also, I've done a prayer blog the last couple of years using the "Seek God for the City" prayer guide and I plan to do that again next year - would love to have you join in!
Phil is also the founder of the National Pastors Prayer Network and has a group by that name here. There's also a Pastor's Prayer Group. On the family front, there's Lillian Penner's "Grandparents at Prayer" group.
Again, welcome aboard - may you be blessed through your time on the Network!