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The evidence that President Trump obstructed justice has come in dribs and drabs. But when that evidence is compiled in one place, I think it becomes overwhelming.

My column this morning is organized around a list of 10 instances when Trump has tried to interfere with the federal investigation into his campaign’s relationship with Russia. You can read the column here.

I decided to use a list for historical reasons. When Congress drafted articles of impeachment against both Richard Nixon and Bill Clinton, it used a list to make the case that each had obstructed justice. Nixon’s list — in the first article of impeachment passed by the House Judiciary Committee — had nine items. Clinton’s list had seven. My list for Trump has 10 items (and of course is based only on the publicly known facts so far).