Make a Wish is a well-known, legitimate charity that provides great comfort to seriously ill children.  Unfortunately, scammers, purporting to be with the Federal Trade Commission (FTC) or other governmental agencies are calling people telling them that they have won hundreds of thousands of dollars in a sweepstakes they say is sponsored by Make a Wish. However, in order to claim the prize, the targeted victim is told that he or she must pay income taxes or insurance before they can claim their prize.
This is a total scam.  Make a Wish does not conduct any kind of sweepstakes and no governmental agency will ever call you to inform you that you have won a lottery of any kind.
Lottery and sweepstakes scams continue to snare people because too many of us get blinded by our own greed to remember that while it is difficult to win any lottery, it is impossible to win one that you have never entered.  Further, no legitimate lottery ever will ask you to pay anything to claim your prize.  While income taxes are owed on lottery winnings, those taxes are either deducted from your prize before you receive your prize as with state sponsored lotteries or you receive the entire prize and are responsible on your own for paying the income taxes on your winnings.  No legitimate lottery or sweepstakes ever collects income tax payments from lottery winners.