Yes, there are rocks out there, routinely falling to earth. Some are large enough to cause inconvenience, damage, death, disaster, even catastrophe - but at increasingly low probability.

There is no plan, no target, no guarantee that one place or another will or will not be hit.

North America isn't a very large proportion of the world, so it's relatively unlikely to be hit.

If you were to do a REAL risk assessment, you should be concerned about areas in east Asia where there is a very high population density in low-lying coastal areas. These are the parts of the world at most risk from a moderate-sized impactor.

Perhaps you should be talking to the Chinese about a NEO defence program? They seem to have budget and ambition and aren't scared of doing something big