The first example might not be a violation of the law at all. It's deeply unethical, but it might technically be legal.
The second example has many different interpretations. The most favorable one is that Trump was urging them to check everywhere to make sure no ballots were missed. Interpreting it as a direct call for ballot stuffing is also possible, but we can't assume that.
Humans tend to have good-faith interpretations of everything said by people they like and bad-faith interpretations of everything said by people they hate.
The second example has many different interpretations. The most favorable one is that Trump was urging them to check everywhere to make sure no ballots were missed. Interpreting it as a direct call for ballot stuffing is also possible, but we can't assume that.
Humans tend to have good-faith interpretations of everything said by people they like and bad-faith interpretations of everything said by people they hate.