Why has one-day shipping been disabled?

[Andrew]

I want to place an order on Amazon with one-day shipping, and my only options are standard and two-day shipping at the moment. Before I could place an order with one-day shipping, why has it been disabled for the time being?

[Stevenson]

I'm not sure, but it works for me. I think it depends on the item. Some items can't be processed and ship right away. It's just like overseas shipping. I mean, you can't really have it shipped one day, instead the only option is standard which takes weeks.