How many US presidents have been formally impeached by Congress?
3
1
1
1
1
1
2
1
2
1
2
1
2
3
1
2
3
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
5
4
1
2
3
5
4
1
2
3
5
4
1
2
3
5
4
1
2
3
5
0
4
1
2
3
5
0
4
1
2
3
5
4
1
0
2
3
5
4
2
3
5
4
2
3
5
4
2
3
5
4
6
2
3
5
4
6
3
5
7
4
6
3
5
7
4
6
3
5
7
4
6
5
7
4
6
5
8
7
4
6
5
8
7
6
9
5
8
7
6
11
9
5
8
7
6
11
9
8
7
6
11
9
8
7
6
11
9
8
7
6
11
9
8
10
7
6
11
9
13
8
10
7
6
11
9
13
8
10
7
6
11
9
13
8
12
10
7
6
11
9
13
8
12
10
7
6
11
9
13
8
12
10
7
6
11
14
9
13
ONE
ONE
ONE
66
62
112
66
62