Broken switch

Being a 1999 it has a Pass-lock security sensor built into the switch housing and a magnet that passes the sensor that is part of the ignition cylinder. The sensor also has a tamper function that will activate the anti-theft system and stop the engine from starting as it shuts off fuel to the engine.

Depending on what parts you decided to break to try to get it to run will determine what you need to do to repair it. If it was only the ignition cylinder (the part that holds the key and rotates to turn the ignition switch in the rear of the housing) you might be able to have a dealer order a replacement cylinder with the original key cut so you do not need to change the other locks or take a chance with carrying two different keys (as accidentally trying to use the wrong key could damage the replacement cylinder by jamming the tumblers).
An automotive locksmith could do the same thing and might be cheaper.
If on the other hand the housing that the ignition cylinder goes into was also damaged, you would likely be better off finding a replacement steering column with at least one key and swapping the entire column. Then you can use the key to remove and replace that ignition cylinder with a replacement set up to match the old keys.

In both cases the system will need to have the security system codes cleared and with a different column the replacement sensor will need to be programmed in.

If you take a few clear close images of what you removed and the column and ignition housing and load them on this sight it would be easier to determine which way would work.

If this is the same one with the broken switch that is what the pass-lock system does if tampered with. It will shut off the fuel to the injectors. Until that sensor is replaced and programmed in the security system will stay on.

Still most likely to be the security system. What does the security light on the dash do when you try to start it?