Ben, an avid day trader, buys and sells stock based on hot tips. He recently purchased Game Stop based on buzz from various websites. His transactions are as follows: On February L, he purchased 100 shares of the stock for $150, the stock was overvalued but the stock price continued to climb. On March 1, he sold 100 shares for S100. He was so disappointed he thought the stock was a sure thing! On March 20, he repurchased 85 shares for $110. The stock price started climbing again and he wanted a piece of the action. How much loss is Ben allowed to deduct from his March 1 sale of shares?

Jason's employer pays year-end bonuses each year on December 31. Jason, a cash-basis taxpayer, would prefer not to pay tax on his bonus this year (and actually would prefer his daughter to pay tax on the bonus). So, he leaves town on December 30 and has his daughter, Julie, picks up his check on January 2nd of the following year. What doctrine is he attempting to violate?