Here's your summary from Trump triples down on 'cognitive, drug test' before debate with Biden (https://www.youtube.com/watch?v=DHhBx-mBmmk) on the Fox News channel:

**TLDR:** Trump is leading in Nevada, promising to eliminate taxes on tips, and calling for cognitive and drug tests for Biden before the debate.

**Key Points:**

1. Trump is leading in Nevada and promises to eliminate taxes on tips for service workers.

2. Trump calls for cognitive and drug tests for Biden before the debate.

3. The potential VP candidates for Trump's ticket remain tight-lipped about their involvement.

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