I had bunionectomies on each of my feet 25 years ago, there are wires in my feet, and now I wake up every morning with my feet swollen. Cause?

Probably not thewire. There are several causes of foot swelling including peripheral edema, decreased circulation, venous insufficienty, kidney issues or cardiac issues or even medications & Mg deficiency. Thus, you should get it checked out by your primary care MD and see if leg elevation, compression socks, massage, a diuretic, lemon slices in your water,epsom salt bath or soak or massage are appropriate and can help.
Feet swollen. As already stated , the wire is not the likely cause . it mat be circulatory , heart , lung , venous , medication or medication interaction . See your family doc for an evaluation .