Life is like a box of chocolates. A metaphor is also a figurative comparison between two things, but does not use like or as - ex. All the world's a stage. Keep in mind that a simile is a type of metaphor, so all similes are technically metaphors.
For most people, the limits on charitable contributions don't apply. Only if you contribute more than 20% of your adjusted gross income to charity is it necessary to be concerned about donation limits. If the contribution is made to a public charity, the deduction is limited to 50% of your contribution base. For example, if you have an adjusted gross income of $100,000, your deduction limit for that year is $50,000. The rules on 20% limits and 30% limits are way too complicated to delve into in this space.
The contribution limit for an individual is $2,500 per election, so the donor could give a total of $5,000 toward the primary and the general. She could give the remaining $2,500 to the candidate's Leadership PAC, which would be used to donate to other Congressional candidates in return for political clout.1,000,000+. This company could donate money to a Federal PAC like the National Restaurant Association, but those donations would be limited and would have to be raised from the company's employees. It could give to state-level committees, though rules and limits vary by state.