K.P.
Good for you! I wish there were more people in the country willing to open their hearts to adoption. My mother and aunt were adopted as young children ( 3 and 4) so, yes, you can adopt a healthy caucasion child, especially a toddler.
Start calling different agencies and set up interviews. The process is extensive and fostering is different than adopting. I have three friends who foster children and they truly amaze me in their ability to love a child so much who will likely leave them quickly.
Please keep in mind, though, that while you can find a child who is healthy medically an "older child" may have some true anxiety and later abandonment concerns to deal with, so "taking up time" WILL come with the territory.
Good luck and best wishes!