Would you characterize Lyndon B. Johnson (vice president of JFK) as a weak or powerful president?

Both. He was too weakminded to see through the domino fallacy bullsh!t, but he made major strides in supporting seniors and minorities. He did have the strength of character not to seek re-election after letting down his country, something that a Republican has had to be threatened with impeachment for an actual crime (not a trumped-up witch-hunt) to have the "integrity" to do.