United States may not assert any claim to immunity in an action under this section which would otherwise be available, including any otherwise applicable statute of limitation, statute of repose, discretionary function defense, or similar limitation or defense. (g) No punitive damages Punitive damages may not be awarded in any action under this Act. (h) Disposition by federal agency required An individual may not bring an action under this section prior to complying with section 2675 of title 28, United States Code. (i) Period for filing (1) In general The statute of limitations for an action under this section is the later of— (A) 2 years from the date on which the harm occurred or was discovered, whichever is later