How many sitting U.S. presidents were formally impeached?
3
1
1
1
1
2
1
2
1
2
1
3
2
1
3
2
1
3
2
4
1
3
2
4
1
3
2
4
1
3
2
5
4
1
3
2
5
4
1
3
2
5
4
1
3
2
5
4
1
3
2
5
4
0
1
3
2
5
4
0
1
3
2
5
4
1
3
2
0
5
4
1
3
2
5
4
0
3
2
5
4
0
3
2
5
4
6
3
2
0
5
4
6
3
5
4
6
3
5
4
6
3
7
5
4
6
7
5
4
6
7
5
4
6
7
5
8
6
7
5
8
6
9
7
5
8
6
9
7
11
8
6
9
7
11
8
6
9
7
11
8
6
9
7
11
8
6
9
7
11
10
8
6
9
7
11
10
8
6
13
9
7
11
10
8
6
13
9
7
11
10
8
6
13
9
7
12
11
10
8
6
13
9
7
12
11
10
8
6
13
9
7
12
11
ONE
ONE
ONE
ONE
ONE
66
62